Updated on 2024/10/07

写真a

 
YOO, Byung Kwang
 
Affiliation
Faculty of Human Sciences, School of Human Sciences
Job title
Professor(tenure-track)
Degree
Doctor of Philosophy (PhD) ( 2002.05 Johns Hopkins University )
Mail Address
メールアドレス
Profile

1967年大阪府生まれ。北海道大学医学部卒業後、国立大阪病院で臨床研修。1997年ハーバード大学より修士号(医療政策・管理学)、2002年ジョンズ・ホプキンス大学より博士号(PhD,医療経済学)取得後、2002-2004年スタンフォード大学医療政策センター研究員(2004年以降非常勤研究員)、2004-2006年米国連邦政府機関・疾病管理予防センター(CDC)エコノミスト。2006-2011年ニューヨーク州ロチェスター大学医学部公衆衛生学科助教授、2011年から2020年3月までカリフォルニア大学デービス校医学部公衆衛生学科(終身職)准教授として、医療経済学の研究と教育(大学院生を対象に医療経済学を講義・研究指導)に従事。2020年4月から神奈川県立保健福祉大学・イノベーション政策研究センター/大学院ヘルスイノベーション研究科教授(2023年4月から兼任)、2023年4月から早稲田大学・人間科学学術院・健康福祉学科教授(医療経済学)。

 

2006年に「『改革』のための医療経済学」(メディカ出版;「日本経済新聞エコノミストが選ぶ経済・経営書ベスト20冊(2006年)」に選出;2021年に北東亜州出版から再刊行)を出版。2021年に『日本再生のための「プランB」― 医療経済学による所得倍増計画』(集英社新書)と『「プランB」をもっと知るための10通の手紙―個人と社会の多様性を豊かにするために』(北東亜州出版)を出版。2023年に『2分の即興劇で生活習慣を変える! 健康教育プログラム 単行本』(社会保険出版社)を出版。

 

主な研究テーマは、大規模感染症(パンデミック)の公衆衛生対策、演劇的手法を用いる健康教育、医療機関が地元経済に与える効果の評価、予防医療の健康格差、医療従事者(特に看護・介護分野)の需要・供給分析、高齢者介護制度の国際比較研究、日本の医療保険制度改革など。また、費用対効果分析・費用対便益分析の研究対象も、救急医療やICUにおける遠隔医療、学校における予防接種、乳児スクリーニング検査等多岐にわたる。カリフォルニア(加)州の民間医療保険の規制(規制法案に関連する科学的資料を作成し、加州議会に提出する委員会のメンバーを2012年-2016年に務め、米国National Institute of Health研究助成金の研究計画の審査委員を、医療経済学の専門家として2017年-2019年に務めた。

Research Experience

  • 2023.04
    -
    Now

    Waseda University   Faculty of Human Sciences   Professor

  • 2023.04
    -
    Now

    Kanagawa University of Human Services (cross-appointment)   School of Health Innovation   Professor

  • 2021.04
    -
    2023.03

    Kanagawa University of Human Services   School of Health Innovation   Professor

  • 2020.04
    -
    2021.03

    Kanagawa University of Human Services   Center for Innovation Policy   Professor

  • 2011.07
    -
    2020.03

    University of California (UC) Davis, School of Medicine   Division of Health Policy and Management Department of Public Health Sciences   Associate Professor (tenure)

  • 2006.03
    -
    2011.06

    University of Rochester, School of Medicine and Dentistry   Division of Health Policy and Outcomes Research, Department of Public Health Sciences   Assistant Professor (tenure track)

  • 2004.10
    -
    2006.02

    Centers for Disease Control and Prevention (CDC)   Health Economist/Prevention Effectiveness Fellow

  • 2002.09
    -
    2004.08

    Stanford University, Center for Health Policy (CHP)   Research Associate

  • 1993.06
    -
    1995.05

    Osaka National Hospital   Department of Orthopedic Surgery   Medical Resident

▼display all

Education Background

  • 1997.09
    -
    2002.05

    Johns Hopkins University   School of Public Health   Department of Health Policy and Management  

  • 1995.09
    -
    1997.06

    Harvard University   School of Public Health   Department of Health Policy and Management  

  • 1987.04
    -
    1993.03

    Hokkaido University   School of Medicine  

Committee Memberships

  • 2017
    -
    2019

    米国連邦政府 国立衛生研究所(NIH)  競争的学術研究助成資金 審査委員

  • 2012
    -
    2017

    California Health Benefits Review Program (CHBRP)  常任委員(医療経済学専門家)

  • 2011
    -
     

    California Health Benefits Review Program (CHBRP)  法案内容(小児予防接種)専門家

Professional Memberships

  • 2022.06
    -
    Now

    Japan Academy of Public Health Nursing

  • 2021.12
    -
    Now

    Japanese Society of Public Health

  • 2017
    -
    Now

    Editorial Board Member, Frontiers in Public Health

  • 2010
    -
    Now

    Editorial Board Member, Journal of Preventive Medicine & Public Health

  • 2006.07
    -
    Now

    Japan Health Economics Association

  • 1996.09
    -
    Now

    International Health Economics Association

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Research Areas

  • Hygiene and public health (non-laboratory) / Medical management and medical sociology

Research Interests

  • Health Economics

  • Health Education

  • Infectious Diseases (Pandemic)

Awards

  • Selected and ranked 14th out of “20 Best Books in Economics and Business in 2006” by Nikkei Newspaper (commonly labeled as the “Wall Street Journal” of Japan) for single-authored book, ”Health Economics for Reform”

    2006  

    Winner: Yoo BK

  • John P. Young Memorial Award in Health Policy and Health Economics

    2002   Johns Hopkins University  

    Winner: Yoo BK

Media Coverage

  • <新型コロナ>早期発見へ 下水中のウイルス検査 1世帯あたり年800円なら負担許容

    東京新聞  

    https://www.tokyo-np.co.jp/article/341261  

    2024.07

  • 「下水疫学」コロナ流行で注目 病原体から感染症把握 コスト抑え正確に

    朝日新聞  

    https://www.asahi.com/articles/DA3S15981368.html  

    2024.07

  • 早大・神奈川県立保健福祉大・東大、下水サーベイランス制度に対する住民の「支払い意思額」を推定

    日本経済新聞  

    https://www.nikkei.com/article/DGXZRSP673862_X20C24A6000000/  

    2024.06

  • コロナは第9波?日本のデータなき政策(兪炳匡さん)【山岡淳一郎のニッポンの崖っぷち】

    デモクラシー・タイムス  

    https://www.youtube.com/watch?v=UaHxj4rmDo0&list=PLtvuS8Y1umY_fD-deoh2x0O0870v7WuW0&index=1  

    2023.09

  • 下水サーベイランスと臨床PCR併用への期待

    Author: Other  

    日経メディカル  

    https://medical.nikkeibp.co.jp/leaf/mem/pub/blog/irohira/202307/580645.html  

    2023.07

  • 早大・神奈川県立保健福祉大など、下水サーベイランスの追加によるCOVID-19スクリーニング検査の経済効率の改善を解明

    日本経済新聞  

    https://www.nikkei.com/article/DGXZRSP659904_X20C23A7000000/  

    2023.07

  • <新型コロナ>下水検査で予測 感染者数の推計、拡大の傾向

    東京新聞  

    https://www.tokyo-np.co.jp/article/243802  

    2023.04

  • 下水疫学調査を用いた新型コロナ等の流行把握について(神奈川県知事との記者会見)

    https://www.pref.kanagawa.jp/documents/86888/siryou1.pdf; https://www.pref.kanagawa.jp/chiji/press-conference/2022/0320.html  

    2023.03

  • インフルでも下水調査 県、より早く感染状況把握

    日本経済新聞  

    https://www.nikkei.com/article/DGKKZO66668470Y2A201C2L82000/  

    2022.12

  • ウイルスの流行を下水から察知できるって? コロナ、インフルエンザへの応用研究進む

    東京新聞  

    https://www.tokyo-np.co.jp/article/214102  

    2022.11

  • 医療体制立て直し急務 地域連携や効率化課題ー『日本再生のための「プランB」』(集英社, 2021年)の書評

    Author: Other  

    日本経済新聞  

    朝刊 29ページ  

    2022.09

  • いまこそ科学的コロナ対策を!

    山岡淳一郎のニッポンの崖っぷち  

    https://www.youtube.com/watch?v=jNiLSNg5OfY  

    2021.10

  • <新型コロナ>感染者予測、より精緻に 県など、接種率と人出も反映

    東京新聞  

    https://www.tokyo-np.co.jp/article/130243  

    2021.09

  • 人流・接種状況の変数入力で感染予測モデル 県と県立保健福祉大が開発

    日本経済新聞  

    https://www.nikkei.com/article/DGKKZO75657610Q1A910C2L82000/  

    2021.09

  • (記者会見)新型コロナウイルス感染症の予測に係る「主要モデル」の開発について~科学的根拠によるデータエビデンスに基づく施策実現のために

    http://www.pref.kanagawa.jp/docs/ga4/prs/r0088537.html  

    2021.09

  • 感染爆発「プランB」で抑え込め!

    山岡淳一郎のニッポンの崖っぷち,  

    https://www.youtube.com/watch?v=ldbSxJK8VFI  

    2021.08

  • 重症者や入院者数を地域別に推計 神奈川県、予測モデル開発

    神奈川新聞  

    https://www.kanaloco.jp/news/government/article-637183.html  

    2021.08

  • コロナ患者数予測モデルを開発 神奈川県など

    日本経済新聞  

    https://www.nikkei.com/article/DGXZQOCC1865P0Y1A810C2000000/  

    2021.08

  • たかがマスクされどマスク(三木義一氏との対談による「新型コロナウイルス感染症対策としてのマスク・ガイドライン改訂に関する提言」の紹介)

    庶民大学TV Japan  

    https://www.youtube.com/watch?v=pC7dzXB49Iw  

    2021.08

  • (記者会見)「データ統合・分析環境整備にともなう新型コロナウイルス感染症に係る予測モデルの開発について」

    https://www.tvk-kaihouku.jp/news_wall/post-8584.php  

    2021.08

  • (インタビュー記事掲載)(耕論)プランBが見えない 失敗想定せず、閉鎖的ゆえ 兪炳匡さん (神奈川県立保健福祉大学教授)

    朝日新聞  

    https://www.asahi.com/articles/DA3S14971293.html(朝刊15頁)  

    2021.07

  • コロナ後の日本再生は欧米モデルからの脱却がカギを握る

    Video News   マル激トーク・オン・ディマンド (第1055回)  

    https://www.videonews.com/marugeki-talk/1055  

    2021.06

  • 日本再生のための「プランB」を考える」三木義一氏との対談

    https://www.youtube.com/watch?v=yZ26M_hU4l8  

    2021.06

  • 参議院本会議にて、拙著『日本再生のための「プランB」』(集英社新書2021年3月発刊)の提言を取り上げて頂く

    参議院本会議  

    https://www.youtube.com/watch?v=u6gHiakHMSw; 22分05秒-22分45秒  

    2021.04

  • デモクラシー・タイムス新シリーズ番組「兪炳匡のどん底ニッポンを立て直す」

    デモクラシー・タイムス  

    https://www.youtube.com/playlist?list=PLtvuS8Y1umY9ag8ClbWPyDHmqO2pzRykF  

    2021

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Papers

  • Willingness to pay for nationwide wastewater surveillance system for infectious diseases in Japan

    Byung-Kwang Yoo, Rei Goto, Masaaki Kitajima, Tomoko Sasaki, Sebastian Himmler

    Environmental Science: Water Research & Technology    2024.06  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    A nationally-representative survey indicated that the population's valuation would economically justify the nationwide wastewater surveillance system in Japan.

    DOI

    Scopus

  • Economic Evaluation of Wastewater Surveillance Combined with Clinical COVID-19 Screening Tests, Japan.

    Byung-Kwang Yoo, Ryo Iwamoto, Ungil Chung, Tomoko Sasaki, Masaaki Kitajima

    Emerging infectious diseases   29 ( 8 ) 1608 - 1617  2023.08  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    The COVID-19 pandemic has imposed substantial burdens on the global society. To find an optimal combination of wastewater surveillance and clinical testing for tracking COVID-19, we evaluated the economic efficiency of hypothetical screening options at a single facility in Japan. To conduct cost-benefit analyses, we developed standard decision models in which we assumed model parameters from literature and primary data, such as screening policies used at the Tokyo Olympic and Paralympic Village in 2021. We compared hypothetical 2-step screening options that used clinical PCR to diagnose COVID-19 after a positive result from primary screening using antigen tests (option 1) or wastewater surveillance (option 2). Our simulation results indicated that option 2 likely would be economically more justifiable than option 1, particularly at lower incidence levels. Our findings could help justify and promote the use of wastewater surveillance as a primary screening at a facility level for COVID-19 and other infectious diseases.

    DOI PubMed

    Scopus

    5
    Citation
    (Scopus)
  • [Collaboration between prefectural university and prefectural government during COVID-19: achievements and challenges of evidence-based policy-making project].

    Yuki Egashira, Ryo Watanabe, Honami Yoshida, Ung-Il Chung, Noboru Nishiumi, Byung-Kwang Yoo

    [Nihon koshu eisei zasshi] Japanese journal of public health   70 ( 3 ) 197 - 205  2023.03  [Refereed]  [Domestic journal]

    Authorship:Last author, Corresponding author

    DOI PubMed

  • Economic Evaluation of Telemedicine Consultations to Reduce Unnecessary Neonatal Care Transfers.

    Byung-Kwang Yoo, Nikki H Yang, Kristin Hoffman, Tomoko Sasaki, Sarah C Haynes, Jamie Mouzoon, James P Marcin

    The Journal of pediatrics   244   58 - 63  2022.05  [Refereed]  [International journal]

    Authorship:Lead author

     View Summary

    OBJECTIVES: To perform an economic evaluation to estimate the return on investment (ROI) of making available telemedicine consultations from a healthcare payer perspective, and to estimate the economic impacts of telemedicine under a hypothetical scenario in which all rural hospitals providing level I neonatal care in California had access to telemedicine consultations from neonatologists at level III and level IV neonatal intensive care units (NICUs). STUDY DESIGN: We developed standard decision models with assumptions derived from primary data and the literature. Telemedicine costs included equipment installation and operation costs. Probabilistic analysis with Monte Carlo simulation was performed to address model uncertainties and to estimate 95% probabilistic confidence intervals (PCIs). All costs were adjusted to 2017 US dollars using the Consumer Price Index. RESULTS: Our probabilistic analysis estimated the ROI to have a mean value of 2.23 (95% PCI, -0.7 to 6.0). That is, a $1 investment in this telemedicine model would yield a net medical expenditure saving of $1.23. "Cost saving" was observed for 75% of the hypothetical 1000 Monte Carlo simulations. For the state of California, the estimated mean annual net savings was $661 000. CONCLUSIONS: Providing telemedicine and making available consultations to rural hospitals providing level I neonatal care are likely to reduce medical expenditures by reducing potentially avoidable transfers of newborns to level III and IV NICUs, offsetting all telemedicine-related costs.

    DOI PubMed

  • Clinical Outcomes of Asynchronous Versus Synchronous Telepsychiatry in Primary Care: Randomized Controlled Trial.

    Peter M Yellowlees, Michelle Burke Parish, Byung-Kwang Yoo, Ana-Maria Iosif et al.

    Journal of medical Internet research   23 ( 7 ) e24047  2021.07  [Refereed]  [International journal]

     View Summary

    BACKGROUND: Asynchronous telepsychiatry (ATP; delayed-time) consultations are a novel form of psychiatric consultation in primary care settings. Longitudinal studies comparing clinical outcomes for ATP with synchronous telepsychiatry (STP) are lacking. OBJECTIVE: This study aims to determine the effectiveness of ATP in improving clinical outcomes in English- and Spanish-speaking primary care patients compared with STP, the telepsychiatry usual care method. METHODS: Overall, 36 primary care physicians from 3 primary care clinics referred a heterogeneous sample of 401 treatment-seeking adult patients with nonurgent psychiatric disorders. A total of 184 (94 ATP and 90 STP) English- and Spanish-speaking participants (36/184, 19.6% Hispanic) were enrolled and randomized, and 160 (80 ATP and 80 STP) of them completed baseline evaluations. Patients were treated by their primary care physicians using a collaborative care model in consultation with the University of California Davis Health telepsychiatrists, who consulted with patients every 6 months for up to 2 years using ATP or STP. Primary outcomes (the clinician-rated Clinical Global Impressions [CGI] scale and the Global Assessment of Functioning [GAF]) and secondary outcomes (patients' self-reported physical and mental health and depression) outcomes were assessed every 6 months. RESULTS: For clinician-rated primary outcomes, ATP did not promote greater improvement than STP at 6-month follow-up (ATP vs STP, adjusted difference in follow-up at 6 months vs baseline differences for CGI: 0.2, 95% CI -0.2 to 0.6; P=.28; and GAF: -0.6, 95% CI -3.1 to 1.9; P=.66) or 12-month follow-up (ATP vs STP, adjusted difference in follow-up at 12 months vs baseline differences for CGI: 0.4, 95% CI -0.04 to 0.8; P=.07; and GAF: -0.5, 95% CI -3.3 to 2.2; P=.70), but patients in both arms had statistically and clinically significant improvements in both outcomes. There were no significant differences in improvement from baseline between ATP and STP on any patient self-reported ratings at any follow-up (all P values were between .17 and .96). Dropout rates were higher than predicted but similar between the 2 arms. Of those with baseline visits, 46.8% (75/160) did not have a follow-up at 1 year, and 72.7% (107/147) did not have a follow-up at 2 years. No serious adverse events were associated with the intervention. CONCLUSIONS: This is the first longitudinal study to demonstrate that ATP can improve clinical outcomes in English- and Spanish-speaking primary care patients. Although we did not find evidence that ATP is superior to STP in improving clinical outcomes, it is potentially a key part of stepped mental health interventions available in primary care. ATP presents a possible solution to the workforce shortage of psychiatrists and a strategy for improving existing systems of care. TRIAL REGISTRATION: ClinicalTrials.gov NCT02084979; https://clinicaltrials.gov/ct2/show/NCT02084979.

    DOI PubMed

  • A Cost-benefit analysis of PCR testing for asymptomatic individuals with Coronavirus Disease 2019 (COVID-19)

    Yoo BK, Takagi S, Noguchi H

    WINPEC Working Paper Series No. J2002 October 2020. https://www.waseda.jp/fpse/winpec/assets/uploads/2020/10/J2002-1_version_p6_corrected.pdf    2020

    Authorship:Lead author, Corresponding author

  • School-Located Influenza Vaccination: Do Vaccine Clinics at School Raise Vaccination Rates?

    Peter G Szilagyi, Stanley Schaffer, Cynthia M Rand, Nicolas Pn Goldstein, A Dirk Hightower, Mary Younge, Christina S Albertin, Kristine DiBitetto, Byung-Kwang Yoo, Sharon G Humiston

    The Journal of school health   89 ( 12 ) 1004 - 1012  2019.12  [Refereed]  [International journal]

     View Summary

    BACKGROUND: Only half of US schoolchildren receive influenza vaccine. School-located influenza vaccination (SLIV) might raise vaccination rates but conducting flu vaccine clinics at schools is challenging to implement. We compared 2 school-based programs designed to raise influenza vaccination rates: parent reminder/educational messages sent to parents from schools which is a low-intensity intervention vs the combination of reminder/educational messages plus SLIV clinics which is a high-intensity intervention. METHODS: We assigned 36 schools (6 school districts, 2 per group) to 3 groups: (1) control, ie, no SLIV and no parent reminder/education, (2) parent reminder/education emailed by schools, and (3) parent reminder/education plus SLIV clinics. Some schools had SLIV clinics in prior years. Health department nurses conducted SLIV clinics. RESULTS: Among 24,832 children at 36 schools, vaccination rates were control (51.3%), parent reminder/education-only (41.2%), and reminder/education + SLIV (58.7%). On multivariate analyses which controlled for vaccination in prior seasons, children in reminder/education + SLIV schools had higher vaccination rates (OR 1.27, 95% CI 1.10-1.47), but children in reminder/education-only schools had lower rates (OR 0.87, 95% CI 0.75-1.00) than children in control schools. CONCLUSIONS: Parent reminder/education combined with SLIV clinics raise vaccination rates, but parent reminder/education alone does not.

    DOI PubMed

  • Can income-based co-payment rates improve disparity? The case of the choice between brand-name and generic drugs.

    Yuki Ito, Konan Hara, Byung-Kwang Yoo, Jun Tomio, Yasuki Kobayashi

    BMC health services research   19 ( 1 ) 780 - 780  2019.11  [Refereed]  [International journal]

     View Summary

    BACKGROUND: Higher income population tend to prefer brand-name to generic drugs, which may cause disparity in access to brand-name drugs among income groups. A potential policy that can resolve such disparity is imposing a greater co-payment rate on high-income enrollees. However, the effects of such policy are unknown. We examined how patients' choice between brand-name and generic drugs are affected by the unique income-based co-payment rates in Japan; 10% for general enrollees and 30% for those with high income among the elderly aged 75 and over. METHODS: We drew on cross-sectional price variation among commonly prescribed 311 drugs using health insurance claims data from a large prefecture in Japan between October 2013 and September 2014 to identify between-income-group differences in responses to differentiated payments. RESULTS: Running 311 multivariate logistic regression models controlling individual demographics, the median estimate indicated that high-income group was 3% (odds ratio = 0.97) less likely to choose a generic drug than the general-income group and the interquartile estimates ranged 0.92-1.02. The multivariate feasible generalized least squares model indicated high-income group's higher likelihood to choose brand-name drugs than the general-income group without co-payment rate differentiation (p < 0.001). Such gap in the likelihood was attenuated by 0.4% (p = 0.027) with an US$1 increase in the difference in additional payment/month for brand-name drugs between income groups - no gap with US$10 additional payment/month. This attenuation was observed in drugs for chronic diseases only, not for acute diseases. CONCLUSIONS: Income-based co-payment rates appeared to reduce disparity in access to brand-name drugs across income groups, in addition to reducing total medical expenditure among high-income group who shifted from brand-name drugs to generic ones due to larger drug price differences.

    DOI PubMed

  • Cost effectiveness of school-located influenza vaccination programs for elementary and secondary school children.

    Byung-Kwang Yoo, Stanley J Schaffer, Sharon G Humiston, Cynthia M Rand, Nicolas P N Goldstein, Christina S Albertin, Cathleen Concannon, Peter G Szilagyi

    BMC health services research   19 ( 1 ) 407 - 407  2019.06  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    BACKGROUND: Studies have noted variations in the cost-effectiveness of school-located influenza vaccination (SLIV), but little is known about how SLIV's cost-effectiveness may vary by targeted age group (e.g., elementary or secondary school students), or vaccine consent process (paper-based or web-based). Further, SLIV's cost-effectiveness may be impacted by its spillover effect on practice-based vaccination; prior studies have not addressed this issue. METHODS: We performed a cost-effectiveness analysis on two SLIV programs in upstate New York in 2015-2016: (a) elementary school SLIV using a stepped wedge design with schools as clusters (24 suburban and 18 urban schools) and (b) secondary school SLIV using a cluster randomized trial (16 suburban and 4 urban schools). The cost-per-additionally-vaccinated child (i.e., incremental cost-effectiveness ratio (ICER)) was estimated by dividing the incremental SLIV intervention cost by the incremental effectiveness (i.e., the additional number of vaccinated students in intervention schools compared to control schools). We performed deterministic analyses, one-way sensitivity analyses, and probabilistic analyses. RESULTS: The overall effectiveness measure (proportion of children vaccinated) was 5.7 and 5.5 percentage points higher, respectively, in intervention elementary (52.8%) and secondary schools (48.2%) than grade-matched control schools. SLIV programs vaccinated a small proportion of children in intervention elementary (5.2%) and secondary schools (2.5%). In elementary and secondary schools, the ICER excluding vaccine purchase was $85.71 and $86.51 per-additionally-vaccinated-child, respectively. When additionally accounting for observed spillover impact on practice-based vaccination, the ICER decreased to $80.53 in elementary schools -- decreasing substantially in secondary schools. (to $53.40). These estimates were higher than the published practice-based vaccination cost (median = $25.50, mean = $45.48). Also, these estimates were higher than our 2009-2011 urban SLIV program mean costs ($65) due to additional costs for use of a new web-based consent system ($12.97 per-additionally-vaccinated-child) and higher project coordination costs in 2015-2016. One-way sensitivity analyses showed that ICER estimates were most sensitive to the SLIV effectiveness. CONCLUSIONS: SLIV raises vaccination rates and may increase practice-based vaccination in primary care practices. While these SLIV programs are effective, to be as cost-effective as practice-based vaccination our SLIV programs would need to vaccinate more students and/or lower the costs for consent systems and project coordination. TRIAL REGISTRATION: ClinicalTrials.gov NCT02227186 (August 25, 2014), updated NCT03137667 (May 2, 2017).

    DOI PubMed

  • Text Message Reminders for Child Influenza Vaccination in the Setting of School-Located Influenza Vaccination: A Randomized Clinical Trial.

    Peter G Szilagyi, Stanley Schaffer, Byung-Kwang Yoo, Sharon G Humiston et al.

    Clinical pediatrics   58 ( 4 ) 428 - 436  2019.04  [Refereed]  [International journal]

     View Summary

    Half of US school children receive influenza vaccine. In our previous trials, school-located influenza vaccination (SLIV) raised vaccination rates by 5 to 8 percentage points. We assessed whether text message reminders to parents could raise vaccination rates above those observed with SLIV. Within urban elementary schools we randomized families into text message + SLIV (intervention) versus SLIV alone (comparison). All parents were sent 2 backpack notifications plus 2 autodialer phone reminders about SLIV at a single SLIV clinic. Intervention group parents also were sent 3 text messages from the school nurse encouraging flu vaccination via either primary care or SLIV. Among 15 768 children at 32 schools, vaccination rates were text + SLIV (40%) and SLIV control (40%); 4% of students per group received influenza vaccination at SLIV. Text message reminders did not raise influenza vaccination rates above those observed with SLIV alone. More intensive interventions are needed to raise influenza vaccination rates.

    DOI PubMed

  • Impact of elementary school-located influenza vaccinations: A stepped wedge trial across a community.

    Peter G Szilagyi, Stanley Schaffer, Byung-Kwang Yoo, Sharon G Humiston et al.

    Vaccine   36 ( 20 ) 2861 - 2869  2018.05  [Refereed]  [International journal]

     View Summary

    BACKGROUND: Influenza vaccination rates among children are low and novel strategies are needed to raise coverage. We measured the impact of school-located influenza vaccination (SLIV) on coverage, examined whether SLIV substitutes for practice-based influenza vaccination ("substitution"), and estimated whether a second year of experience with SLIV increases its impact. METHODS: We implemented a stepped wedge study design with schools as clusters. In Year 1, we randomly allocated schools to SLIV or control. In Year 2, all schools performed SLIV. We used emails (suburban schools) or backpack fliers (both urban and suburban schools) to notify parents, and offered web-based (suburban) or paper-based vaccination (urban) consent forms. Local health department nurses administered SLIV vaccinations and billed insurers. We analyzed state immunization registry data to measure influenza vaccination rates. RESULTS: 42 schools (38,078 children) participated over 2 years. Overall vaccination rates were 5 and 7 percentage points higher among SLIV- school children versus control-school children in suburban (aOR 1.36, 95% CI 1.25-1.49 in Years 1-2 SLIV vs. Year 1 control schools) and urban schools (aOR 1.22, 95% CI 1.10-1.36), respectively, adjusting for prior year's vaccination and other covariates. While no substitution occurred among children attending suburban schools, some substitution occurred among children attending urban schools, although overall vaccination rates were still higher in urban schools due to SLIV. Compared to an initial year of SLIV, more children were vaccinated in a second year of SLIV at urban (8.3% vs. 6.8%, aOR 1.24, 95% CI 1.04-1.47) but not suburban schools (3.5% vs. 2.7%, aOR 1.24, 95% CI 0.98-1.57). CONCLUSIONS: In this stepped wedge trial, SLIV increased overall influenza vaccination rates in suburban and urban schools. Some substitution for primary care vaccination occurred in urban settings. A second year of SLIV expanded its reach slightly in urban schools.

    DOI PubMed

  • Impact of a direct-to-consumer information campaign on prescription patterns for overactive bladder.

    Masayoshi Zaitsu, Byung-Kwang Yoo, Jun Tomio, Fumiaki Nakamura, Satoshi Toyokawa, Yasuki Kobayashi

    BMC health services research   18 ( 1 ) 325 - 325  2018.05  [Refereed]  [International journal]

     View Summary

    BACKGROUND: Direct-to-consumer information (DTCI) campaign is a new medium to inform and empower patients in their decision-making without directly promoting specific drugs. However, little is known about the impact of DTCI campaigns, expanding rapidly in developed countries, on changes in prescription patterns. We sought to determine whether a DTCI campaign on overactive bladder increases the prescription rate for overactive bladder treatment drugs. METHODS: We performed a 3-year retrospective cohort study of 1332 participants who were diagnosed overactive bladder but not prescribed treatment drugs prior to the examined DTCI campaign (exposure), using the health insurance claims dataset of the Japan Medical Data Center (November 19, 2010 to November 18, 2013). The DTCI campaign for overactive bladder included television, Internet, and print advertising (November 19, 2011 to December 22, 2011). We divided the study period into Pre-Campaign Year (2010-2011), Year 1 (2011-2012), and Year 2 (2012-2013). Each year began on November 19 and included Period 1 (weeks 1-5) through Period 10 (weeks 46-50). The main outcome was first-time prescription of the treatment drug for each patient, measured by 5-week periods. Using Period 10 in the Pre-Campaign Year as the referent period, we applied the Cox proportional hazard model for each period. Additionally, we performed the interrupted time series analysis (ITSA) for the first-time prescription rate per 5-week period. RESULTS: Following the DTCI campaign, patients were about seven times more likely to receive a first prescription of a treatment drug during Period 4 in Year 1 (hazard ratio 7.09; 95% CI, 2.11-23.8; p-value<.01) compared with the reference period. Similar increases were also observed for subsequent Periods 5 and 6 in Year 1. The ITSA confirmed the DTCI campaign impact on the level of prescription rate (one-time increase in the regression-intercept) that increased by 1128.1 [per standardized 100,000 persons] (p < .05) during Period 4 in Year 1. CONCLUSIONS: The examined DTCI campaign appeared to increase the prescription rate among patients with overactive bladder for 15 weeks with a 15-week delay. Clinical outcomes of the patients with targeted diseases need to be monitored after DTCI campaigns by a future study.

    DOI PubMed

  • School-located Influenza Vaccinations for Adolescents: A Randomized Controlled Trial.

    Peter G Szilagyi, Stanley Schaffer, Byung-Kwang Yoo, Sharon G Humiston et al.

    The Journal of adolescent health : official publication of the Society for Adolescent Medicine   62 ( 2 ) 157 - 163  2018.02  [Refereed]  [International journal]

     View Summary

    PURPOSE: We aimed to evaluate the effect of school-located influenza vaccination (SLIV) on adolescents' influenza vaccination rates. METHODS: In 2015-2016, we performed a cluster-randomized trial of adolescent SLIV in middle/high schools. We selected 10 pairs of schools (identical grades within pairs) and randomly allocated schools within pairs to SLIV or usual care control. At eight suburban SLIV schools, we sent parents e-mail notifications about upcoming SLIV clinics and promoted online immunization consent. At two urban SLIV schools, we sent parents (via student backpack fliers) paper immunization consent forms and information about SLIV. E-mails were unavailable at these schools. Local health department nurses administered nasal or injectable influenza vaccine at dedicated SLIV clinics and billed insurers. We compared influenza vaccination rates at SLIV versus control schools using school directories to identify the student sample in each school. We used the state immunization registry to determine receipt of influenza vaccination. RESULTS: The final sample comprised 17,650 students enrolled in the 20 schools. Adolescents at suburban SLIV schools had higher overall influenza vaccination rates than did adolescents at control schools (51% vs. 46%, p < .001; adjusted odds ratio = 1.27, 95% confidence interval 1.18-1.38, controlling for vaccination during the prior two seasons). No effect of SLIV was noted among urbanschools on multivariate analysis. SLIV did not substitute for vaccinations in primary care or other settings; in suburban settings, SLIV was associated with increased vaccinations in primary care or other settings (adjusted odds ratio = 1.10, 95% confidence interval 1.02-1.19). CONCLUSIONS: SLIV in this community increased influenza vaccination rates among adolescents attending suburban schools.

    DOI PubMed

  • Selected Use of Telemedicine in Intensive Care Units Based on Severity of Illness Improves Cost-Effectiveness.

    Byung-Kwang Yoo, Minchul Kim, Tomoko Sasaki, Jeffrey S Hoch, James P Marcin

    Telemedicine journal and e-health : the official journal of the American Telemedicine Association   24 ( 1 ) 21 - 36  2018.01  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    BACKGROUND: Telemedicine in the intensive care unit (tele-ICU) is expected to address geographic health disparities through more efficient resource allocation. Our previous economic evaluation demonstrated tele-ICU to be cost-effective in most cases and cost saving in some cases, compared to conventional intensive care unit (ICU) care without adequate intensivist coverage. INTRODUCTION: This study's objective is to examine how to optimize the cost-effectiveness of tele-ICU use by selecting highest risk (i.e., both highest mortality and highest cost) subpopulations. We also explore potential cost savings. MATERIALS AND METHODS: We conducted simulation analyses among a hypothetical adult ICU patient cohort defined by the literature, distinguishing four types of hospitals: urban tertiary (primary analysis), urban community, rural tertiary, and rural community. The selected tele-ICU use was assumed to affect per-patient ICU cost and hospital mortality among highest risk subpopulations (10-100% of all ICU patients), defined by an established illness-severity measure. RESULTS: We found a U-shaped relationship between the economic efficiency and selected tele-ICU use among all 4 hospital types. Optimal cost-effectiveness was achieved when tele-ICU was applied to the 30-40% highest risk patients among all ICU patients (incremental cost-effectiveness ratio = $25,392 [2014 U.S. dollars] per extending a quality-adjusted life year) in urban tertiary hospitals (primary analysis). Our break-even analyses indicated that cost saving seems more feasible when reducing ICU medical care cost, rather than lowering the cost to operate telemedicine alone. DISCUSSION AND CONCLUSIONS: A selected use of tele-ICU based on severity of illness is likely to improve tele-ICU cost-effectiveness. To achieve cost saving, tele-ICU must reduce more than just telemedicine-related cost.

    DOI PubMed

  • Pilot survey of a novel incentive to promote healthy behavior among school children and their parents.

    Byung-Kwang Yoo, Takuya Hasebe, Minchul Kim, Tomoko Sasaki, Dennis M Styne

    Preventive medicine reports   6   286 - 293  2017.06  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    Reversing the obesity epidemic has been a persistent global public health challenge, particularly among low socioeconomic status populations and racial/ethnic minorities. We developed a novel concept of community-based incentives to approach this problem in such communities. Applying this concept, we proposed a school intervention to promote obesity prevention in the U.S. We conducted a pilot survey to explore attitudes towards this future intervention. The survey was collected as a nonprobability sample (N = 137 school-aged children (5-12 years)) in northern California in July 2013. We implemented multivariable logistic regression analyses where the dependent variable indicated the intention to participate in the future intervention. The covariates included the body mass index (BMI) based weight categories, demographics, and others. We found that the future intervention is expected to motivate generally-high-risk populations (such as children and parents who have never joined a past health-improvement program compared to those who have completed a past health-improvement program (the odds-ratio (OR) = 5.84, p < 0.05) and children with an obese/overweight parent (OR = 2.72, p < 0.05 compared to those without one)) to participate in future obesity-prevention activities. Our analyses also showed that some subgroups of high-risk populations, such as Hispanic children (OR = 0.27, p < 0.05) and children eligible for a free or reduced price meal program (OR = 0.37, p < 0.06), remain difficult to reach and need an intensive outreach activity for the future intervention. The survey indicated high interest in the future school intervention among high-risk parents who have never joined a past health-improvement program or are obese/overweight. These findings will help design and implement a future intervention.

    DOI PubMed

  • The Impact of Economic Recession On Registered Nurse Workforce Supply in California.

    Byung-Kwang Yoo, Minchul Kim, Tomoko Sasaki, Debbie Ward, Joanne Spetz

    Nursing Economics   35 ( 1 ) 21 - 9  2017  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    The severe economic recession from December 2007 to December 2010 substantially affected registered nurse (RN) employment. The objective of this study was to determine if the association between RN workforce supply and its potential determinants differed during the period from 2008 to 2012. Older, experienced RNs were more likely to work in 2010, compared to 2008, but less likely to work in 2012 compared to 2010. RNs were less sensitive to financial factors in 2010 than in 2008, but were more sensitive in 2012 than in 2010. These recession-driven changes in employment may have had impacts on the labor market for newly graduating RNs.

    PubMed

  • School-Located Influenza Vaccinations: A Randomized Trial.

    Peter G Szilagyi, Stanley Schaffer, Byung-Kwang Yoo, Sharon G Humiston et al.

    Pediatrics   138 ( 5 )  2016.11  [Refereed]  [International journal]

     View Summary

    OBJECTIVE: Assess impact of offering school-located influenza vaccination (SLIV) clinics using both Web-based and paper consent upon overall influenza vaccination rates among elementary school children. METHODS: We conducted a cluster-randomized trial (stratified by suburban/urban districts) in upstate New York in 2014-2015. We randomized 44 elementary schools, selected similar pairs of schools within districts, and allocated schools to SLIV versus usual care (control). Parents of children at SLIV schools were sent information and vaccination consent forms via e-mail, backpack fliers, or both (depending on school preferences) regarding school vaccine clinics. Health department nurses conducted vaccine clinics and billed insurers. For all children registered at SLIV/control schools, we compared receipt of influenza vaccination anywhere (primary outcome). RESULTS: The 44 schools served 19 776 eligible children in 2014-2015. Children in SLIV schools had higher influenza vaccination rates than children in control schools county-wide (54.1% vs 47.4%, P < .001) and in suburban (61.9% vs 53.6%, P < .001) and urban schools (43.9% vs 39.2%; P < .001). Multivariate analyses (controlling for age, grade, vaccination in previous season) confirmed bivariate findings. Among parents who consented for SLIV, nearly half of those notified by backpack fliers and four-fifths of those notified by e-mail consented online. In suburban districts, SLIV did not substitute for primary care influenza vaccination. In urban schools, some substitution occurred. CONCLUSIONS: SLIV raised seasonal influenza vaccination rates county-wide and in both suburban and urban settings. SLIV did not substitute for primary care vaccinations in suburban settings where pediatricians often preorder influenza vaccine but did substitute somewhat in urban settings.

    PubMed

  • The effect of prior healthcare employment on the wages of registered nurses.

    Byung-Kwang Yoo, Minchul Kim, Tzu-Chun Lin, Tomoko Sasaki, Debbie Ward, Joanne Spetz

    BMC health services research   16 ( 1 ) 412 - 412  2016.08  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    BACKGROUND: The proportion of registered nurses (RNs) with employment in health-related positions before their initial RN education has increased in the past two decades. Previous research found that prior health-related employment is positively associated with RN workforce supply, potentially due to the wage differences based on different career paths. This study's objective is to test the hypotheses that prior health-related employment is associated with differences in starting wages and with different rates of wage growth for experience as an RN. METHODS: We conducted a cross-sectional analysis using the 2008 National Sample Survey of Registered Nurses (NSSRN) linked with county-level variables from the Area Health Resource File. We estimated a Heckman model where the second-stage equation's outcome variable was the logarithm of the RN hourly wage, accounting for the self-selection of working or not working as an RN (i.e., the first-stage equation's outcome variable). Key covariates included interaction terms between years of experience, experience squared, and six categories of prior health-related employment (manager, LPN/LVN, allied health, nursing aide, clerk, and all other healthcare positions). Additional covariates included demographics, weekly working hours, marital status, highest nursing degree, and county-level variables (e.g., unemployment rate). We estimated the marginal effect of experience on wage for each type of prior health-related employment, conducting separate analyses for RNs whose initial education was a Bachelor of Science in Nursing (BSN) (unweighted N = 10,345/weighted N = 945,429), RNs whose initial education was an Associate degree (unweighted N = 13,791/weighted N = 1,296,809), and total population combining the former groups (unweighted N = 24,136/weighted N = 2,242,238). RESULTS: Prior health-related employment was associated with higher wages, with the strongest wage differences among BSN-educated RNs. Among BSN-educated RNs, previous employment as a health care manager, LPN/LVN, or nursing aide produced statistically higher starting wages ($1.72-$3.86 per hour; $3400-$7700 per year; p = 0.006-0.08). However, experience-based wage growth was lower for BSN-educated RNs previously employed as allied health workers, LPN/LVNs, or nursing aides. Among Associate degree-educated RNs, wage difference was not observed except for higher initial wage for RNs with previous employment as LPN/LVNs. CONCLUSIONS: Prior employment in health-related positions was associated with both starting salary and experience-based wage growth among BSN-educated RNs. The higher wage return for those with a BSN may motivate non-RN healthcare workers to seek a BSN in their transition to RN jobs, which could help advancement toward the 80 % BSN workforce recommended by the U.S. Institute of Medicine.

    DOI PubMed

  • A Systematic Review of the Economic Evaluation of Telemedicine in Japan.

    Miki Akiyama, Byung-Kwang Yoo

    Journal of preventive medicine and public health   49 ( 4 ) 183 - 96  2016.07  [Refereed]  [International journal]

    Authorship:Last author, Corresponding author

     View Summary

    OBJECTIVES: There is no systematic review on economic evaluations of telemedicine in Japan, despite over 1000 trials implemented. Our systematic review aims to examine whether Japan's telemedicine is cost-saving or cost-effective, examine the methodological rigorousness of the economic evaluations, and discuss future studies needed to improve telemedicine's financial sustainability. METHODS: We searched five databases, including two Japanese databases, to find peer-reviewed articles published between January 1, 2000 and December 31, 2014 in English and Japanese that performed economic evaluations of Japan's telemedicine programs. The methodological rigorousness of the economic analyses was assessed with a well-established checklist. We calculated the benefit-to-cost ratio (BCR) when a reviewed study reported related data but did not report the BCR. All cost values were adjusted to 2014 US dollars. RESULTS: Among the 17 articles identified, six studies reported on settings connecting physicians for specialist consultations, and eleven studies on settings connecting healthcare providers and patients at home. There are three cost-benefit analyses and three cost-minimization analyses. The remaining studies measured the benefit of telemedicine only, using medical expenditure saved or users' willingness-to-pay. There was substantial diversity in the methodological rigorousness. Studies on teledermatology and teleradiology indicated a favorable level of economic efficiency. Studies on telehomecare gave mixed results. One cost-benefit analysis on telehomecare indicated a low economic efficiency, partly due to public subsidy rules, e.g., a too short budget period. CONCLUSIONS: Overall, telemedicine programs in Japan were indicated to have a favorable level of economic efficiency. However, the scarcity of the economic literature indicates the need for further rigorous economic evaluation studies.

    DOI PubMed

  • Economic Evaluation of Telemedicine for Patients in ICUs.

    Byung-Kwang Yoo, Minchul Kim, Tomoko Sasaki, Joy Melnikow, James P Marcin

    Critical care medicine   44 ( 2 ) 265 - 74  2016.02  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    OBJECTIVE: Despite telemedicine's potential to improve patients' health outcomes and reduce costs in the ICU, hospitals have been slow to introduce telemedicine in the ICU due to high up-front costs and mixed evidence on effectiveness. This study's first aim was to conduct a cost-effectiveness analysis to estimate the incremental cost-effectiveness ratio of telemedicine in the ICU, compared with ICU without telemedicine, from the healthcare system perspective. The second aim was to examine potential cost saving of telemedicine in the ICU through probabilistic analyses and break-even analyses. DESIGN: Simulation analyses performed by standard decision models. SETTING: Hypothetical ICU defined by the U.S. literature. PATIENTS: Hypothetical adult patients in ICU defined by the U.S. literature. INTERVENTIONS: The intervention was the introduction of telemedicine in the ICU, which was assumed to affect per-patient per-hospital-stay ICU cost and hospital mortality. Telemedicine in the ICU operation costs included the telemedicine equipment-installation (start-up) costs with 5-year depreciation, maintenance costs, and clinician staffing costs. Telemedicine in the ICU effectiveness was measured by cumulative quality-adjusted life years for 5 years after ICU discharge. MEASUREMENTS AND MAIN RESULTS: The base case cost-effectiveness analysis estimated telemedicine in the ICU to extend 0.011 quality-adjusted life years with an incremental cost of $516 per patient compared with ICU without telemedicine, resulting in an incremental cost-effectiveness ratio of $45,320 per additional quality-adjusted life year (= $516/0.011). The probabilistic cost-effectiveness analysis estimated an incremental cost-effectiveness ratio of $50,265 with a wide 95% CI from a negative value (suggesting cost savings) to $375,870. These probabilistic analyses projected that cost saving is achieved 37% of 1,000 iterations. Cost saving is also feasible if the per-patient per-hospital-stay operational cost and physician cost were less than $422 and less than $155, respectively, based on break-even analyses. CONCLUSIONS: Our analyses suggest that telemedicine in the ICU is cost-effective in most cases and cost saving in some cases. The thresholds of cost and effectiveness, estimated by break-even analyses, help hospitals determine the impact of telemedicine in the ICU and potential cost saving.

    DOI PubMed

  • Effect of prior health-related employment on the registered nurse workforce supply

    Yoo BK, Lin TC, Kim M, Sasaki T, Spetz J

    Nursing Economics   34 ( 1 ) 25 - 34  2016.01  [Refereed]

    Authorship:Lead author, Corresponding author

  • Cost effectiveness analysis of Year 2 of an elementary school-located influenza vaccination program-Results from a randomized controlled trial.

    Byung-Kwang Yoo, Sharon G Humiston, Peter G Szilagyi, Stanley J Schaffer, Christine Long, Maureen Kolasa

    BMC health services research   15   511 - 511  2015.11  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    BACKGROUND: School-located vaccination against influenza (SLV-I) has the potential to improve current suboptimal influenza immunization coverage for U.S. school-aged children. However, little is known about SLV-I's cost-effectiveness. The objective of this study is to establish the cost-effectiveness of SLV-I based on a two-year community-based randomized controlled trial (Year 1: 2009-2010 vaccination season, an unusual H1N1 pandemic influenza season, and Year 2: 2010-2011, a more typical influenza season). METHODS: We performed a cost-effectiveness analysis on a two-year randomized controlled trial of a Western New York SLV-I program. SLV-I clinics were offered in 21 intervention elementary schools (Year 1 n = 9,027; Year 2 n = 9,145 children) with standard-of-care (no SLV-I) in control schools (Year 1 n = 4,534 (10 schools); Year 2 n = 4,796 children (11 schools)). We estimated the cost-per-vaccinated child, by dividing the incremental cost of the intervention by the incremental effectiveness (i.e., the number of additionally vaccinated students in intervention schools compared to control schools). RESULTS: In Years 1 and 2, respectively, the effectiveness measure (proportion of children vaccinated) was 11.2 and 12.0 percentage points higher in intervention (40.7 % and 40.4 %) than control schools. In year 2, the cost-per-vaccinated child excluding vaccine purchase ($59.88 in 2010 US $) consisted of three component costs: (A) the school costs ($8.25); (B) the project coordination costs ($32.33); and (C) the vendor costs excluding vaccine purchase ($16.68), summed through Monte Carlo simulation. Compared to Year 1, the two component costs (A) and (C) decreased, while the component cost (B) increased in Year 2. The cost-per-vaccinated child, excluding vaccine purchase, was $59.73 (Year 1) and $59.88 (Year 2, statistically indistinguishable from Year 1), higher than the published cost of providing influenza vaccination in medical practices ($39.54). However, taking indirect costs (e.g., averted parental costs to visit medical practices) into account, vaccination was less costly in SLV-I ($23.96 in Year 1, $24.07 in Year 2) than in medical practices. CONCLUSIONS: Our two-year trial's findings reinforced the evidence to support SLV-I as a potentially favorable system to increase childhood influenza vaccination rates in a cost-efficient way. Increased efficiencies in SLV-I are needed for a sustainable and scalable SLV-I program.

    DOI PubMed

  • Economic Evaluation of Pediatric Telemedicine Consultations to Rural Emergency Departments.

    Nikki H Yang, Madan Dharmar, Byung-Kwang Yoo, J Paul Leigh, Nathan Kuppermann, Patrick S Romano, Thomas S Nesbitt, James P Marcin

    Medical decision making : an international journal of the Society for Medical Decision Making   35 ( 6 ) 773 - 83  2015.08  [Refereed]  [International journal]

     View Summary

    BACKGROUND: Comprehensive economic evaluations have not been conducted on telemedicine consultations to children in rural emergency departments (EDs). OBJECTIVE: We conducted an economic evaluation to estimate the cost, effectiveness, and return on investment (ROI) of telemedicine consultations provided to health care providers of acutely ill and injured children in rural EDs compared with telephone consultations from a health care payer prospective. METHODS: We built a decision model with parameters from primary programmatic data, national data, and the literature. We performed a base-case cost-effectiveness analysis (CEA), a probabilistic CEA with Monte Carlo simulation, and ROI estimation when CEA suggested cost-saving. The CEA was based on program effectiveness, derived from transfer decisions following telemedicine and telephone consultations. RESULTS: The average cost for a telemedicine consultation was $3641 per child/ED/year in 2013 US dollars. Telemedicine consultations resulted in 31% fewer patient transfers compared with telephone consultations and a cost reduction of $4662 per child/ED/year. Our probabilistic CEA demonstrated telemedicine consultations were less costly than telephone consultations in 57% of simulation iterations. The ROI was calculated to be 1.28 ($4662/$3641) from the base-case analysis and estimated to be 1.96 from the probabilistic analysis, suggesting a $1.96 return for each dollar invested in telemedicine. Treating 10 acutely ill and injured children at each rural ED with telemedicine resulted in an annual cost-savings of $46,620 per ED. LIMITATIONS: Telephone and telemedicine consultations were not randomly assigned, potentially resulting in biased results. CONCLUSIONS: From a health care payer perspective, telemedicine consultations to health care providers of acutely ill and injured children presenting to rural EDs are cost-saving (base-case and more than half of Monte Carlo simulation iterations) or cost-effective compared with telephone consultations.

    DOI PubMed

  • Cost-Effectiveness Analysis of a Television Campaign to Promote Seasonal Influenza Vaccination Among the Elderly.

    Minchul Kim, Byung-Kwang Yoo

    Value in health : the journal of the International Society for Pharmacoeconomics and Outcomes Research   18 ( 5 ) 622 - 30  2015.07  [Refereed]  [International journal]

    Authorship:Last author, Corresponding author

     View Summary

    BACKGROUND: The U.S. policy goals regarding influenza vaccination coverage rate among the elderly include the increase in the coverage rate and the elimination of disparities across racial/ethnic groups. OBJECTIVE: To examine the potential effectiveness of a television (TV) campaign to increase seasonal influenza vaccination among the elderly. METHODS: We estimated the incremental cost-effectiveness ratio (ICER, defined as incremental cost per additionally vaccinated Medicare individual) of a hypothetical nationwide TV campaign for influenza vaccination compared with no campaign. We measured the effectiveness of the nationwide TV campaign (advertised once a week at prime time for 30 seconds) during a 17-week influenza vaccination season among four racial/ethnic elderly groups (N=39 million): non-Hispanic white (W), non-Hispanic African American (AA), English-speaking Hispanic (EH), and Spanish-speaking Hispanic (SH). RESULTS: The hypothetical campaign cost was $5,960,000 (in 2012 US dollars). The estimated campaign effectiveness ranged from -1.1% (the SH group) to 1.42% (the W group), leading to an increased disparity in influenza vaccination among non-Hispanic white and non-Hispanic African American (W-AA) groups (0.6 percentage points), W-EH groups (0.1 percentage points), and W-SH groups (1.5 percentage points). The estimated ICER was $23.54 (95% confidence interval $14.21-$39.37) per additionally vaccinated Medicare elderly in a probabilistic analysis. Race/ethnicity-specific ICERs were lowest among the EH group ($22.27), followed by the W group ($22.47) and the AA group ($30.55). The nationwide TV campaign was concluded to be reasonably cost-effective compared with a benchmark intervention (with ICER $44.39 per vaccinated individual) of a school-located vaccination program. Break-even analyses estimated the maximum acceptable campaign cost to be $14,870,000, which was comparable to the benchmark ICER. CONCLUSIONS: The results could justify public expenditures on the implementation of a future nationwide TV campaign, which should include multilingual campaigns, for promoting seasonal influenza vaccination.

    DOI PubMed

  • Decomposing racial/ethnic disparities in influenza vaccination among the elderly.

    Byung-Kwang Yoo, Takuya Hasebe, Peter G Szilagyi

    Vaccine   33 ( 26 ) 2997 - 3002  2015.06  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    While persistent racial/ethnic disparities in influenza vaccination have been reported among the elderly, characteristics contributing to disparities are poorly understood. This study aimed to assess characteristics associated with racial/ethnic disparities in influenza vaccination using a nonlinear Oaxaca-Blinder decomposition method. We performed cross-sectional multivariable logistic regression analyses for which the dependent variable was self-reported receipt of influenza vaccine during the 2010-2011 season among community dwelling non-Hispanic African-American (AA), non-Hispanic White (W), English-speaking Hispanic (EH) and Spanish-speaking Hispanic (SH) elderly, enrolled in the 2011 Medicare Current Beneficiary Survey (MCBS) (un-weighted/weighted N=6,095/19.2 million). Using the nonlinear Oaxaca-Blinder decomposition method, we assessed the relative contribution of seventeen covariates - including socio-demographic characteristics, health status, insurance, access, preference regarding healthcare, and geographic regions - to disparities in influenza vaccination. Unadjusted racial/ethnic disparities in influenza vaccination were 14.1 percentage points (pp) (W-AA disparity, p<0.001), 25.7 pp (W-SH disparity, p<0.001) and 0.6 pp (W-EH disparity, p>.8). The Oaxaca-Blinder decomposition method estimated that the unadjusted W-AA and W-SH disparities in vaccination could be reduced by only 45% even if AA and SH groups become equivalent to Whites in all covariates in multivariable regression models. The remaining 55% of disparities were attributed to (a) racial/ethnic differences in the estimated coefficients (e.g., odds ratios) in the regression models and (b) characteristics not included in the regression models. Our analysis found that only about 45% of racial/ethnic disparities in influenza vaccination among the elderly could be reduced by equalizing recognized characteristics among racial/ethnic groups. Future studies are needed to identify additional modifiable characteristics causing disparities in influenza vaccination.

    DOI PubMed

  • Cost effectiveness analysis of elementary school-located vaccination against influenza--results from a randomized controlled trial.

    Byung-Kwang Yoo, Sharon G Humiston, Peter G Szilagyi, Stanley J Schaffer, Christine Long, Maureen Kolasa

    Vaccine   31 ( 17 ) 2156 - 64  2013.04  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    School-located vaccination against influenza (SLV-I) has been suggested to help meet the need for annual vaccination of large numbers of school-aged children with seasonal influenza vaccine. However, little is known about the cost and cost-effectiveness of SLV-I. We conducted a cost-analysis and a cost-effectiveness analysis based on a randomized controlled trial (RCT) of an SLV-I program implemented in Monroe County, New York during the 2009-2010 vaccination season. We hypothesized that SLV-I is more cost effective, or less-costly, compared to a conventional, office-located influenza vaccination delivery. First and second SLV-I clinics were offered in 21 intervention elementary schools (n=9027 children) with standard of care (no SLV-I) in 11 control schools (n=4534 children). The direct costs, to purchase and administer vaccines, were estimated from our RCT. The effectiveness measure, receipt of ≥1 dose of influenza vaccine, was 13.2 percentage points higher in SLV-I schools than control schools. The school costs ($9.16/dose in 2009 dollars) plus project costs ($23.00/dose) plus vendor costs excluding vaccine purchase ($19.89/dose) was higher in direct costs ($52.05/dose) than the previously reported mean/median cost [$38.23/$21.44 per dose] for providing influenza vaccination in pediatric practices. However SLV-I averted parent costs to visit medical practices ($35.08 per vaccine). Combining direct and averted costs through Monte Carlo Simulation, SLV-I costs were $19.26/dose in net costs, which is below practice-based influenza vaccination costs. The incremental cost-effectiveness ratio (ICER) was estimated to be $92.50 or $38.59 (also including averted parent costs). When additionally accounting for the costs averted by disease prevention (i.e., both reduced disease transmission to household members and reduced loss of productivity from caring for a sick child), the SLV-I model appears to be cost-saving to society, compared to "no vaccination". Our findings support the expanded implementation of SLV-I, but also the need to focus on efficient delivery to reduce direct costs.

    DOI PubMed

  • A randomized trial of the effect of centralized reminder/recall on immunizations and preventive care visits for adolescents.

    Peter G Szilagyi, Christina Albertin, Sharon G Humiston, Cynthia M Rand, Stanley Schaffer, Howard Brill, Joseph Stankaitis, Byung-Kwang Yoo, Aaron Blumkin, Shannon Stokley

    Academic pediatrics   13 ( 3 ) 204 - 13  2013  [Refereed]  [International journal]

     View Summary

    OBJECTIVE: To assess the impact of a managed care-based patient reminder/recall system on immunization rates and preventive care visits among low-income adolescents. METHODS: We conducted a randomized controlled trial between December 2009 and December 2010 that assigned adolescents aged 11-17 years to one of three groups: mailed letter, telephone reminders, or control. Publicly insured youths (n = 4115) were identified in 37 participating primary care practices. The main outcome measures were immunization rates for routine vaccines (meningococcus, pertussis, HPV) and preventive visit rates at study end. RESULTS: Intervention and control groups were similar at baseline for demographics, immunization rates, and preventive visits. Among adolescents who were behind at the start, immunization rates at study end increased by 21% for mailed (P < .01 vs control), 17% for telephone (P < .05), and 13% for control groups. The proportion of adolescents with a preventive visit (within 12 months) was: mailed (65%; P < .01), telephone (63%; P < .05), and controls (59%). The number needed to treat for an additional fully vaccinated adolescent was 14 for mailed and 25 for telephone reminders; for an additional preventive visit, it was 17 and 29. The intervention cost $18.78 (mailed) or $16.68 (phone) per adolescent per year to deliver. The cost per additional adolescent fully vaccinated was $463.99 for mailed and $714.98 for telephone; the cost per additional adolescent receiving a preventive visit was $324.75 and $487.03. CONCLUSIONS: Managed care-based mail or telephone reminder/recall improved adolescent immunizations and preventive visits, with modest costs and modest impact.

    DOI PubMed

  • Mother-child interactions and the associations with child healthcare utilization in low-income urban families.

    Margaret L Holland, Byung-Kwang Yoo, Harriet Kitzman, Linda Chaudron, Peter G Szilagyi, Helena Temkin-Greener

    Maternal and child health journal   16 ( 1 ) 83 - 91  2012.01  [Refereed]  [International journal]

     View Summary

    Studies have demonstrated that low-income families often have disproportionately high utilization of emergency department (ED) and hospital services, and low utilization of preventive visits. A possible contributing factor is that some mothers may not respond optimally to their infants' health needs, either due to their own responsiveness or due to the child's ability to send cues. These mother-child interactions are measurable and amenable to change. We examined the associations between mother-child interactions and child healthcare utilization among low-income families. We analyzed data from the Nurse-Family Partnership trial in Memphis, TN control group (n = 432). Data were collected from child medical records (birth to 24 months), mother interviews (12 and 24 months postpartum), and observations of mother-child interactions (12 months postpartum). We used logistic and ordered logistic regression to assess independent associations between mother-child interactions and child healthcare utilization measures: hospitalizations, ED visits, sick-child visits to primary care, and well-child visits. Better mother-child interactions, as measured by mother's responsiveness to her child, were associated with decreased hospitalizations (OR: 0.51; 95% CI: 0.32, 0.81), decreased ambulatory-care-sensitive ED visits (OR: 0.65, 95% CI: 0.44, 0.96), and increased well-child visits (OR: 1.55, 95% CI: 1.06, 2.28). Mother's responsiveness to her child was associated with child healthcare utilization. Interventions to improve mother-child interactions may be appropriate for mother-child dyads in which child healthcare utilization appears unbalanced with inadequate primary care and excess urgent care. Recognition of these interactions may also improve the care clinicians provide for families.

    DOI PubMed

  • Self-efficacy as a mediator between maternal depression and child hospitalizations in low-income urban families.

    Margaret L Holland, Byung-Kwang Yoo, Harriet Kitzman, Linda Chaudron, Peter G Szilagyi, Helena Temkin-Greener

    Maternal and child health journal   15 ( 7 ) 1011 - 9  2011.10  [Refereed]  [International journal]

     View Summary

    The objective of this study is to examine the role of maternal self-efficacy as a potential mediator between maternal depression and child hospitalizations in low-income families. We analyzed data from 432 mother-child pairs who were part of the control-group for the Nurse-Family Partnership trial in Memphis, TN. Low-income urban, mostly minority women were interviewed 12 and 24 months after their first child's birth and their child's medical records were collected from birth to 24 months. We fit linear and ordered logistic regression models to test for mediation. We also tested non-linear relationships between the dependent variable (child hospitalization) and covariates (depressive symptoms and self-efficacy). Elevated depressive symptoms (OR: 1.70; 90% CI: 1.05, 2.74) and lower maternal self-efficacy (OR: 0.674; 90% CI: 0.469, 0.970) were each associated with increased child hospitalizations. When both maternal self-efficacy and depressive symptoms were included in a single model, the depressive symptoms coefficient decreased significantly (OR decreased by 0.13, P = 0.069), supporting the hypothesis that self-efficacy serves as a mediator. A non-linear, inverse-U shaped relationship between maternal self-efficacy and child hospitalizations was supported: lower compared to higher self-efficacy was associated with more child hospitalizations (P = 0.039), but very low self-efficacy was associated with fewer hospitalizations than low self-efficacy (P = 0.028). In this study, maternal self-efficacy appears to be a mediator between maternal depression and child hospitalizations. Further research is needed to determine if interventions specifically targeting self-efficacy in depressed mothers might decrease child hospitalizations.

    DOI PubMed

  • Japanese universal health coverage: evolution, achievements, and challenges.

    Naoki Ikegami, Byung-Kwang Yoo, Hideki Hashimoto, Masatoshi Matsumoto, Hiroya Ogata, Akira Babazono, Ryo Watanabe, Kenji Shibuya, Bong-Min Yang, Michael R Reich, Yasuki Kobayashi

    Lancet (London, England)   378 ( 9796 ) 1106 - 15  2011.09  [Refereed]  [International journal]

     View Summary

    Japan shows the advantages and limitations of pursuing universal health coverage by establishment of employee-based and community-based social health insurance. On the positive side, almost everyone came to be insured in 1961; the enforcement of the same fee schedule for all plans and almost all providers has maintained equity and contained costs; and the co-payment rate has become the same for all, except for elderly people and children. This equity has been achieved by provision of subsidies from general revenues to plans that enrol people with low incomes, and enforcement of cross-subsidisation among the plans to finance the costs of health care for elderly people. On the negative side, the fragmentation of enrolment into 3500 plans has led to a more than a three-times difference in the proportion of income paid as premiums, and the emerging issue of the uninsured population. We advocate consolidation of all plans within prefectures to maintain universal and equitable coverage in view of the ageing society and changes in employment patterns. Countries planning to achieve universal coverage by social health insurance based on employment and residential status should be aware of the limitations of such plans.

    DOI PubMed

  • How to improve influenza vaccination rates in the U.S.

    Byung Kwang Yoo

    Journal of preventive medicine and public health = Yebang Uihakhoe chi   44 ( 4 ) 141 - 8  2011.07  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    Annual epidemics of seasonal influenza occur during autumn and winter in temperate regions and have imposed substantial public health and economic burdens. At the global level, these epidemics cause about 3-5 million severe cases of illness and about 0.25-0.5 million deaths each year. Although annual vaccination is the most effective way to prevent the disease and its severe outcomes, influenza vaccination coverage rates have been at suboptimal levels in many countries. For instance, the coverage rates among the elderly in 20 developed nations in 2008 ranged from 21% to 78% (median 65%). In the U.S., influenza vaccination levels among elderly population appeared to reach a "plateau" of about 70% after the late 1990s, and levels among child populations have remained at less than 50%. In addition, disparities in the coverage rates across subpopulations within a country present another important public health issue. New approaches are needed for countries striving both to improve their overall coverage rates and to eliminate disparities. This review article aims to describe a broad conceptual framework of vaccination, and to illustrate four potential determinants of influenza vaccination based on empirical analyses of U.S. nationally representative populations. These determinants include the ongoing influenza epidemic level, mass media reporting on influenza-related topics, reimbursement rate for providers to administer influenza vaccination, and vaccine supply. It additionally proposes specific policy implications, derived from these empirical analyses, to improve the influenza vaccination coverage rate and associated disparities in the U.S., which could be generalizable to other countries.

    DOI PubMed

  • Influenza vaccine supply and racial/ethnic disparities in vaccination among the elderly.

    Byung-Kwang Yoo, Megumi Kasajima, Charles E Phelps, Kevin Fiscella, Nancy M Bennett, Peter G Szilagyi

    American journal of preventive medicine   40 ( 1 ) 1 - 10  2011.01  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    BACKGROUND: The impact of vaccine shortages on disparities in influenza vaccination is uncertain. PURPOSE: The objective of this research was to examine the association between influenza vaccine supply and racial/ethnic disparities in vaccination rates among elderly Medicare beneficiaries. METHODS: Cross-sectional multivariable logistic regression analyses were performed in 2010 to examine whether racial/ethnic disparities in vaccination rates changed across two consecutive seasons: from (Period 1) 2000-2001 and 2001-2002 seasons through (Period 4) 2003-2004 and 2004-2005 seasons. Self-reported receipt of influenza vaccine across consecutive years was examined among community-dwelling non-Hispanic African-American (AA); non-Hispanic white (W); English-speaking Hispanic (EH); and Spanish-speaking Hispanic (SH) elderly enrolled in the Medicare Current Beneficiary Survey (unweighted n=2306-2504, weighted n=8.23-8.99 million for Periods 1 through 4). RESULTS: During Periods 1 and 2, when vaccine supply increased nationally, adjusted racial/ethnic disparities in the influenza vaccination rate decreased by 1.8%-7.4% (W-AA disparity); 4.5%-6.6% (W-EH disparity); and 6.6%-11% (W-SH disparity) (all p<0.001). During Period 4, when vaccine supply declined, adjusted disparities in vaccination rates increased by 2.3% (W-AA disparity) and 6.1% (W-EH disparity) but decreased by 6.6% (W-SH disparity) probably due to a "floor effect" (constant low rates among SH; all p<0.001). CONCLUSIONS: Improved vaccine supply was generally associated with reduced racial/ethnic disparities in influenza vaccination rates, whereas worse supply was associated with increased disparities. To avoid future widening of racial health disparities, policy options include stabilizing the vaccine supply and preferential delivery of vaccines to safety-net providers serving AA and Hispanic populations during a shortage.

    DOI PubMed

  • Association between Medicaid reimbursement and child influenza vaccination rates.

    Byung-Kwang Yoo, Andrea Berry, Megumi Kasajima, Peter G Szilagyi

    Pediatrics   126 ( 5 ) e998-1010  2010.11  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    OBJECTIVE: We examined associations between influenza vaccination rates and Medicaid reimbursement rates for vaccine administration among poor children who were eligible for Medicaid (<100% of the federal poverty level in all states). METHODS: We analyzed 3 consecutive National Immunization Surveys (NISs) to assess influenza vaccination rates among nationally representative children 6 to 23 months of age during the 2005-2006 (unweighted N = 12 885), 2006-2007 (unweighted N = 9238), and 2007-2008 (unweighted N = 11 785) influenza seasons (weighted N = 3.3-4.0 million per season). We categorized children into 3 income levels (poor, near-poor, or nonpoor). We performed analyses with full influenza vaccination as the dependent variable and state Medicaid reimbursement rates (continuous covariate ranging from $2 to $17.86 per vaccination) and terms with income levels as key covariates. RESULTS: In total, 21.0%, 21.3%, and 28.9% of all US children and 11.7%, 11.6%, and 18.8% of poor children were fully vaccinated in the 2006, 2007, and 2008 NISs, respectively. Multivariate analyses of all 3 seasons found positive significant (all P < .05) associations between state-level Medicaid reimbursement and influenza vaccination rates among poor children. A $10 increase, from $8 per influenza vaccination (the US average) to $18 (the highest state reimbursement), in the Medicaid reimbursement rate was associated with 6.0-, 9.2-, and 6.4-percentage point increases in full vaccination rates among poor children in the 2006, 2007, and 2008 NIS analyses, respectively. CONCLUSION: Medicaid reimbursement rates are strongly associated with influenza vaccination rates.

    DOI PubMed

  • Effects of mass media coverage on timing and annual receipt of influenza vaccination among Medicare elderly.

    Byung-Kwang Yoo, Margaret L Holland, Jay Bhattacharya, Charles E Phelps, Peter G Szilagyi

    Health services research   45 ( 5 Pt 1 ) 1287 - 309  2010.10  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    OBJECTIVE: To measure the association between mass media coverage on flu-related topics and influenza vaccination, regarding timing and annual vaccination rates, among the nationally representative community-dwelling elderly. DATA SOURCE: Years 1999, 2000, and 2001 Medicare Current Beneficiary Survey. STUDY DESIGN: Cross-sectional survival analyses during each of three influenza vaccination seasons between September 1999 and December 2001. The outcome variable was daily vaccine receipt. We measured daily media coverage by counting the number of television program transcripts and newspaper/wire service articles, including keywords of influenza/flu and vaccine/shot shortage/delay. All models' covariates included three types of media, vaccine supply, and regional/individual factors. PRINCIPAL FINDINGS: Influenza-related reports in all three media sources had a positive association with earlier vaccination timing and annual vaccination rate. Four television networks' reports had most consistent positive effects in all models, for example, shifting the mean vaccination timing earlier by 1.8-4.1 days (p<.001) or increasing the annual vaccination rate by 2.3-7.9 percentage points (p<.001). These effects tended to be greater when reported in a headline rather than in text only and if including additional keywords, for example, vaccine shortage/delay. CONCLUSIONS: Timing and annual receipt of influenza vaccination appear to be influenced by media coverage, particularly by headlines and specific reports on shortage/delay.

    DOI PubMed

  • Public Avoidance and the Epidemiology of novel H1N1 Influenza A

    Yoo BK, Kasajima M, Bhattacharya J

    National Bureau of Economic Research Working Paper, w15752, National Bureau of Economic Research (NBER), Cambridge, MA   http://www.nber.org/papers/w15752  2010.02

    Authorship:Lead author, Corresponding author

  • Cost of universal influenza vaccination of children in pediatric practices.

    Byung-Kwang Yoo, Peter G Szilagyi, Stanley J Schaffer, Sharon G Humiston, Cynthia M Rand, Christina S Albertin, Phyllis Vincelli, Aaron K Blumkin, Laura P Shone, Margaret S Coleman

    Pediatrics   124 Suppl 5 ( Suppl 5 ) S499-506  2009.12  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    OBJECTIVES: The goals were to estimate nationally representative pediatric practices' costs of providing influenza vaccination during the 2006-2007 season and to simulate the costs pediatric practices might incur when implementing universal influenza vaccination for US children aged 6 months to 18 years. METHODS: We surveyed a stratified, random sample of New York State pediatric practices (N = 91) to obtain information from physicians and office managers about all practice resources associated with provision of influenza vaccination. We estimated vaccination costs for 2 practice sizes (small and large) and 3 geographic areas (urban, suburban, and rural). We adjusted these data to obtain national estimates of the total practice cost (in 2006 dollars) for providing 1 influenza vaccination to children aged 6 months to 18 years. RESULTS: Among all respondents, the median total cost per vaccination was $28.62 (interquartile range: $18.67-45.28). The median component costs were as follows: clinical personnel labor costs, $2.01; nonclinical personnel labor costs, $7.96; all other (overhead) costs, $10.43. Vaccine purchase costs averaged $8.22. Smaller practices and urban practices had higher costs than larger or suburban practices. With the assumption of vaccine administration reimbursement for all Vaccines for Children (VFC)-eligible children at the current Medicaid median of $8.40, the financial loss across all US pediatric practices through delivery of VFC vaccines would be $98 million if one third of children received influenza vaccine. CONCLUSION: The total cost for pediatric practices to provide influenza vaccination is high, varies according to practice characteristics, and exceeds the average VFC reimbursement.

    DOI PubMed

  • Effects of an ongoing epidemic on the annual influenza vaccination rate and vaccination timing among the Medicare elderly: 2000-2005.

    Byung-Kwang Yoo, Megumi Kasajima, Kevin Fiscella, Nancy M Bennett, Charles E Phelps, Peter G Szilagyi

    American journal of public health   99 Suppl 2 ( Suppl 2 ) S383-8  2009.10  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    OBJECTIVES: We assessed short-term responsiveness of influenza vaccine demand to variation in timing and severity of influenza epidemics since 2000. We tested the hypothesis that weekly influenza epidemic activity is associated with annual and daily influenza vaccine receipt. METHODS: We conducted cross-sectional survival analyses from the 2000-2001 to 2004-2005 influenza seasons among community-dwelling elderly using the Medicare Current Beneficiary Survey (unweighted n = 2280-2822 per season; weighted n = 7.7-9.7 million per season). The outcome variable was daily vaccine receipt. Covariates included the biweekly changes of epidemic and vaccine supply at 9 census-region levels. RESULTS: In all 5 seasons, biweekly epidemic change was positively associated with overall annual vaccination (e.g., 2.7% increase in 2003-2004 season) as well as earlier vaccination timing (P < .01). For example, unvaccinated individuals were 5%-29% more likely to receive vaccination after a 100% biweekly epidemic increase. CONCLUSIONS: Accounting for short-term epidemic responsiveness in predicting demand for influenza vaccination may improve vaccine distribution and the annual vaccination rate, and might assist pandemic preparedness planning.

    DOI PubMed

  • The Cost Effectiveness of Screening Newborns for Congenital Adrenal Hyperplasia

    B.K. Yoo, S.D. Grosse

    Public Health Genomics   12 ( 2 ) 67 - 72  2009  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    Objective: To assess the cost effectiveness of newborn screening for congenital adrenal hyperplasia (CAH) in the U.S. newborn population. Methods: We constructed a decision model to estimate the incremental cost-effectiveness ratio (ICER) of CAH screening compared to a strategy of no screening. Two types of cost effectiveness analyses (CEA) were conducted to measure ICER as net cost per life year (LY): (1) traditional CEA with sensitivity and scenario analyses, and (2) probabilistic CEA. Results: ICERs for (1) base-case analysis in traditional CEA and (2) probabilistic CEA were USD 292,000 and USD 255,700 per LY saved in 2005 USD, respectively. ICERs were particularly sensitive to assumptions regarding the mortality rate for the salt wasting type of CAH, in a range from 2 to 9%. The ICERs for best-case and worst-case scenarios were USD 30,900 and USD 2.9 million per LY saved, respectively. Conclusions: Using common benchmarks for cost effectiveness, our results indicate that CAH screening would be unlikely to be considered cost effective unless assumptions favorable to screening were adopted, although it could meet economic criteria used to assess U.S. regulatory policies. A limitation is that the analysis excludes outcomes such as correct assignment of gender and quality of life.

    DOI

  • Additional visit burden for universal influenza vaccination of US school-aged children and adolescents.

    Cynthia M Rand, Peter G Szilagyi, Byung-Kwang Yoo, Peggy Auinger, Christina Albertin, Margaret S Coleman

    Archives of pediatrics & adolescent medicine   162 ( 11 ) 1048 - 55  2008.11  [Refereed]  [International journal]

     View Summary

    OBJECTIVE: To estimate the additional primary care visits needed for universal influenza vaccination of all US children and adolescents if all vaccinations occurred in primary care settings. DESIGN: Cross-sectional design. SETTING: Well-child care and other visits to primary care practices from the 2003-2004 Medical Expenditure Panel Survey. PARTICIPANTS: Children aged 5 to 18 years (n = 3047) with a usual source of care. Main Outcome Measure Percentage of children needing 0, 1, or 2 additional visits to be immunized against influenza in a 3-, 4-, or 5-month vaccination window. RESULTS: In a 3-month window, if only well-child care visits were used for first immunization, 97% of 5- and 6-year-olds and 98% of 7- and 8-year-olds would need 1 or 2 additional visits for complete vaccination; 95% of 9- to 18-year-olds would need 1 visit. If instead all visits were used for immunization, 90% of 5- and 6-year-olds and 91% of 7- and 8-year-olds would need 1 or 2 visits; 78% of 9- to 18-year-olds would need 1 visit. Expanding the window to 4 or 5 months slightly reduces the need for additional visits. Nationally, using all opportunities for vaccination, 42 million additional visits would be needed in a generous 5-month window. CONCLUSIONS: Most children and adolescents would need additional visits for universal influenza vaccination, even if all existing visits were used as vaccination opportunities. Efficient methods for vaccinating large numbers of children and adolescents are needed if primary care practices are to provide influenza vaccine for all children.

    DOI PubMed

  • The instrumental variable method to study self-selection mechanism: a case of influenza vaccination.

    Byung-Kwang Yoo, Kevin D Frick

    Value in health : the journal of the International Society for Pharmacoeconomics and Outcomes Research   9 ( 2 ) 114 - 22  2006  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    OBJECTIVE: To assess whether estimates of the effectiveness of influenza vaccination in reducing rates of hospitalizations and all-cause mortality derived from cross-sectional data could be improved by applying the instrumental variable (IV) method to data representing the community-dwelling elderly population in the United States in order to adjust for self-selection bias. METHODS: Secondary data analysis, using the 1996-97 Medicare Current Beneficiary Survey data. First, using single-equation probit regressions this study analyzed influenza-related hospitalization and death due to all causes predicted by vaccination status, which was measured by claims or survey data. Second, to adjust for potential self-selection of the vaccine receipt, for example, higher vaccination rates among high-risk individuals, bivariate probit (BVP) models and two-stage least squares (2SLS) models were employed. The IV was having either arthritis or gout. RESULTS: In single-equation probit models, vaccination appeared to be ineffective or even to increase the probability of adverse outcomes. Based on BVP and 2SLS models, vaccination was demonstrated to be effective in reducing influenza-related hospitalization by at least 31%. The BVP model results implied significant self-selection in the single-equation probit models. CONCLUSIONS: Adjusting for self-selection, BVP analyses yielded vaccine effectiveness estimates for a nationally representative cross-sectional sample of the community-dwelling elderly population that are consistent with previous estimates based on randomized controlled trials, prospective cohort studies, and meta-analyses. This result suggests that analyses with 2SLS and BVP in particular may be useful for the analysis of observational data regarding prevention in which self-selection is an important potential source of bias.

    PubMed

  • Determinants of influenza vaccination timing.

    Byung Kwang Yoo, Kevin Frick

    Health economics   14 ( 8 ) 777 - 91  2005.08  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    New guidelines recommend different influenza vaccination timing for different subpopulations due to the limited availability of flu shots (FS). This study's objectives are to develop a theoretical model to demonstrate why some individuals choose to receive an early FS while others choose a late FS and to empirically explore the determinants of vaccination timing. Empirical results generally supported the theoretical results. Individuals vary their FS timing in response to variations in perceived risks, chronic condition levels reflecting their risk of influenza infection, and opportunity costs, measured by the presence of medical care other than an FS.

    PubMed

  • Impacts of informal caregiver availability on long-term care expenditures in OECD countries.

    Byung-Kwang Yoo, Jay Bhattacharya, Kathryn M McDonald, Alan M Garber

    Health services research   39 ( 6 Pt 2 ) 1971 - 92  2004.12  [Refereed]  [International journal]

    Authorship:Lead author, Corresponding author

     View Summary

    OBJECTIVE: To quantify the effects of informal caregiver availability and public funding on formal long-term care (LTC) expenditures in developed countries. DATA SOURCE/STUDY SETTING: Secondary data were acquired for 15 Organization for Economic Cooperation and Development (OECD) countries from 1970 to 2000. STUDY DESIGN: Secondary data analysis, applying fixed- and random-effects models to time-series cross-sectional data. Outcome variables are inpatient or home heath LTC expenditures. Key explanatory variables are measures of the availability of informal caregivers, generosity in public funding for formal LTC, and the proportion of the elderly population in the total population. DATA COLLECTION/EXTRACTION METHOD: Aggregated macro data were obtained from OECD Health Data, United Nations Demographic Yearbooks, and U.S. Census Bureau International Data Base. PRINCIPAL FINDINGS: Most of the 15 OECD countries experienced growth in LTC expenditures over the study period. The availability of a spouse caregiver, measured by male-to-female ratio among the elderly, is associated with a $28,840 (1995 U.S. dollars) annual reduction in formal LTC expenditure per additional elderly male. Availability of an adult child caregiver, measured by female labor force participation and full-time/part-time status shift, is associated with a reduction of $310 to $3,830 in LTC expenditures. These impacts on LTC expenditure vary across countries and across time within a country. CONCLUSIONS: The availability of an informal caregiver, particularly a spouse caregiver, is among the most important factors explaining variation in LTC expenditure growth. Long-term care policies should take into account behavioral responses: decreased public funding in LTC may lead working women to leave the labor force to provide more informal care.

    PubMed

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Books and Other Publications

  • Improve your lifestyle with a 2-minute Improvisational theater! - Health Education Program

    Yoo BK (Editor), Hirata O et al.

    Syakai Hoken Shuppansya  2023.03 ISBN: 9784784603572

    ASIN

  • 個人の選択肢を増やす「プランB」とは何か

    兪 炳匡 (Yoo BK) (3. パラダイム転換へ, p229-246) [『撤退論 歴史のパラダイム転換にむけて』内田 樹(編著), (担当:分担執筆)]

    晶文社  2022.04 ISBN: 9784794973078

  • 残された少ない時間で「プランB」を発動できるか

    Yoo BK (第2部提言8, p64-70) [『医療白書2021年度版 日本のコロナ対応「混乱の本質」——真の制度改革・医療強靭化を実現せよ!——』寺崎仁(監修) (担当:分担執筆)]

    日本医療企画  2021.11 ISBN: 9784867290781

  • 10 letters to learn more about ‘Plan B’ - to enrich the diversity of individuals and society

    Yoo BK( Part: Sole author)

    Hokuto Ashu Shuppan  2021.04 ISBN: 9784991195013

    ASIN

  • Health Economics for ‘Reform’

    Yoo BK( Part: Sole author)

    Hokuto Ashu Shuppan  2021.03 ISBN: 9784991195006

    ASIN

  • ‘Plan B’ to revitalize Japan - Income doubling plan from the perspectives of Health Economics

    Yoo BK( Part: Sole author)

    Shueisha  2021.03 ISBN: 9784087211610

    ASIN

  • 台風とコロナ・パンデミックは同じか?

    兪炳匡 (Yoo BK) (p145-156) [『ポストコロナ期を生きるきみたちへ』内田樹(編), (担当:分担執筆)]

    晶文社  2020.11 ISBN: 9784794970428

  • 医療経済学からの提案-医療経済学は医療改革にどう貢献できるか

    Yoo BK

    医療白書2007年度版, 日本医療政策機構 (編), vol.152, p.4-8  2007

  • Health Economics for ‘Reform’

    Yoo BK( Part: Sole author)

    Medicus Publisher  2006.08 ISBN: 9784840417594

▼display all

Presentations

  • 特別講座:社会福祉の悩みの新たな対処法~マクロ経済から現場の悩みまで

    Yoo BK  [Invited]

    第29回社会福祉研究交流集会in関東 

    Presentation date: 2024.09

  • 医療経済学的観点から見た下水サーベイランスの費用便益効果

    Yoo BK  [Invited]

    JWWSA第3回講演会-ポストコロナ社会における下水サーベイランスの活用と全国展開に向けて-. 一般社団法人日本下水サーベイランス協会 

    Presentation date: 2024.08

  • 医療が地域再生の中心になる経済学的理由 ~世界最高健康都市構想実現のために~

    Yoo BK  [Invited]

    佐久総合病院グループ 第63回農村医学夏季大学講座 

    Presentation date: 2024.07

  • プランBはなぜ必要か?

    Yoo BK  [Invited]

    第24回阪大整形外科開業医会 

    Presentation date: 2024.07

  • なぜ日本再生のために「プランB」が必要か

    Yoo BK  [Invited]

    神奈川県保険医協会第69回定時総会(記念講演) 

    Presentation date: 2024.06

  • 日本再生のための「プランB」医療経済学による所得倍増計画

    Yoo BK  [Invited]

    第27回日本医業経営コンサルタント学会京都大会 

    Presentation date: 2023.11

  • 日本経済のための「プランB」医療経済による所得倍増計画

    Yoo BK  [Invited]

    「トップ管理者のための経営講座」全日本民主医療機関連合会 

    Presentation date: 2023.11

  • 人権としての『医療へのアクセス』の保障〜新自由主義的医療改革から住民のいのちと医療の現場が大切にされる医療保障改革へ〜

    Yoo BK  [Invited]

    日本弁護士連合会 第65回人権擁護大会シンポジウム 

    Presentation date: 2023.10

  • 下水疫学のイノベーションと社会実装課題『医療経済学・下水疫学の経済評価』

    Yoo BK  [Invited]

    KISTEC教育講座. 神奈川県立産業技術総合研究所 

    Presentation date: 2023.09

  • 日本再生のための「プランB」

    Yoo BK  [Invited]

    愛知県保険医協会2023年度定期総会 

    Presentation date: 2023.06

  • 日本と神奈川県の新型コロナウイルス(COVID-19)対策:特に下水疫学調査について

    Yoo BK  [Invited]

    神奈川県内の国会議員・県議会議員・市議会議員からヒアリング 

    Presentation date: 2023.05

  • 激動を味方にするための処方箋—「医療」「教育」「芸術」、地方が生き残るためのプランB—

    Yoo BK  [Invited]

    山梨県産業技術センター 講習会 

    Presentation date: 2023.02

  • コロナ対応検証プロジェクトに関わるヒアリングにて知見提供

    Yoo BK  [Invited]

    四大学連合ポストコロナ社会コンソーシアム 

    Presentation date: 2023.01

  • なぜプランBが必要なのか

    Yoo BK  [Invited]

    東京大学公共政策大学院 新・医療政策研究会 

    Presentation date: 2023.01

  • 日本再生のための「プランB」医療経済学による所得倍増計画

    Yoo BK  [Invited]

    NPO法人医療制度研究会 講習会 

    Presentation date: 2022.12

  • 演劇手法を用いた新たな健康教育のカタチ

    沼田誉理, 遠藤裕太, Yoo BK

    第11回日本公衆衛生看護学会学術集会 

    Presentation date: 2022.12

  • 最低賃金の引き上げのメリット−沈む日本を引き上げる

    Yoo BK  [Invited]

    立憲民主党の国会議員による最低賃金アップ問題ワーキングチーム総会 

    Presentation date: 2022.12

  • 「日本再生のための『プランB』」で論じている最低賃金の論点に基づき講演

    Yoo BK  [Invited]

    立憲民主党 最低賃金アップ問題WT総会 

    Presentation date: 2022.12

  • 最低賃金の一元化と引き上げのメリット

    Yoo BK  [Invited]

    自由民主党の国会議員による最低賃金一元化推進議員連盟 第14回総会 

    Presentation date: 2022.11

  • 新型コロナウイルスワクチン接種における健康格差の検証:都道府県別パネルデータ分析

    沼田誉理, Yoo BK

    第81回日本公衆衛生学会総会 

    Presentation date: 2022.10

  • 各経済指標から見える日本の立ち位置と処方箋.セミナー;等身大の日本の姿を見つめる①

    Yoo BK  [Invited]

    高知県自治研究センター講演 

    Presentation date: 2022.09

  • 今こそ科学的コロナ対策を

    Yoo BK  [Invited]

    立憲アカデミーおおさか第4回講座 

    Presentation date: 2022.08

  • なぜプランBが必要かーパンデミック対策のケースを中心に

    Yoo BK  [Invited]

    『日本における保守化・右傾化・反知性主義化の構造研究会』講演 

    Presentation date: 2022.07

  • なぜプランBが必要か

    Yoo BK  [Invited]

    兵庫県保険医協会講演 

    Presentation date: 2022.07

  • 撤退戦における『プランB』という選択肢

    Yoo BK  [Invited]

    国民春闘共闘委員会講演 

    Presentation date: 2022.06

  • なぜプランBが必要か

    Yoo BK  [Invited]

    国立大学附属病院医療安全管理協議会関東甲信越地区会議特別講演 

    Presentation date: 2022.05

  • 教育講演3 EL03最近の医療経済学の動向―日本の諸問題に貢献できるか?

    Yoo BK  [Invited]

    第80 回日本公衆衛生学会総会 

    Presentation date: 2021.12

  • How COVID-19 policies differ among the US, Japan and Kangawa

    Yoo BK  [Invited]

    The Stanford-Kanagawa Online Symposium 

    Presentation date: 2021.11

  • ポストコロナ時代の医療政策について

    Yoo BK  [Invited]

    立憲民主党大阪府総支部連合会・勉強会 

    Presentation date: 2021.07

  • コロナ危機下のプランB

    Yoo BK  [Invited]

    東京青年医会 早朝勉強会 

    Presentation date: 2021.07

  • コロナ・パンデミック対策の一環としての下水PCR検査

    Yoo BK  [Invited]

    令和ルネサンス会議(国会議員、地方議会議員の研究会) 

    Presentation date: 2021.06

  • 『プランB』下の北東アジア経済共同体

    Yoo BK  [Invited]

    令和ルネサンス会議(国会議員、地方議会議員の研究会) 

    Presentation date: 2021.06

  • 日本再生のための「プランB」-医療経済学による所得倍増計画について

    Yoo BK  [Invited]

    令和ルネサンス会議(国会議員、地方議会議員の研究会) 

    Presentation date: 2021.05

  • 日本再生のための「プランB」-医療経済学による所得倍増計画について

    Yoo BK  [Invited]

    立憲民主党新型コロナウイルス対策本部 

    Presentation date: 2021.05

  • 新型コロナウイルス感染症対策について

    Yoo BK  [Invited]

    立憲民主党新型コロナウイルス対策本部 

    Presentation date: 2021.05

  • 日本のコロナ・パンデミック対策の問題点

    Yoo BK  [Invited]

    令和ルネサンス会議(国会議員、地方議会議員の研究会) 

    Presentation date: 2021.05

  • アメリカと競合しない分野を目指せ!「医療」「教育」「芸術」、日本が生き残るための再生論

    Yoo BK, 内田樹

    週プレNEWS, https://wpb.shueisha.co.jp/news/society/2021/04/18/113493/ 

    Presentation date: 2021.04

    Event date:
    2021.04
     
     
  • Economic Evaluation of Telemedicine Consultations for Newborns to Reduce Transfers to Regional Neonatal Intensive Care Units

    Yoo BK, Yang NH, Hoffman K, Sasaki T, Kissee J, Haynes SC, Marcin JP[International coauthorship]

    The National Telehealth Research Symposium 2019 conference, Chicago, Illinois 

    Presentation date: 2019.09

  • How walking programs’ characteristics affect economic efficiency of lifestyle interventions

    Yoo BK, Sasaki T[International coauthorship]

    American Society of Health Economists, 7th Annual Conference, Atlanta, Georgia 

    Presentation date: 2018.06

  • Including indirect time cost and utility gain changes estimates of economic efficiency of lifestyle interventions: Findings and implications for future research

    Yoo BK, Sasaki T, Hoch JS[International coauthorship]

    International Health Economics Association (iHEA), Biennial World Congress, Boston 

    Presentation date: 2017.07

  • Economic Evaluation of Socially Assistive Devices among the Institutionalized Elderly with Dementia in the US

    Yoo BK

    American Society of Health Economics (ASHE), 6th Biennial Conference, Philadelphia, Pennsylvania 

    Presentation date: 2016.06

  • Economic Evaluations of Telemedicine and Telehealth in Various Settings

    Yoo BK[International coauthorship]

    American Society of Health Economics (ASHE), 6th Biennial Conference, Philadelphia, Pennsylvania  (Philadelphia) 

    Presentation date: 2016.06

  • Economic Evaluation of a Socially Assistive Medium among the Institutionalized Elderly with Dementia in the US

    Yoo BK, Enami K, Sasaki T, Nishio S, Sumioka H, Ishiguro H[International coauthorship]

    International Health Economics Association (iHEA), 11th World Congress, Milan, Italy 

    Presentation date: 2015.07

  • The Impact of 2009 Pandemic Influenza on Racial/ethnic Disparities in Seasonal Influenza Vaccination

    Yoo BK, Hasebe T, Yang NH, James K, Sasaki T[International coauthorship]

    American Society of Health Economists, Fifth Biennial Conference, Los Angeles, California 

    Presentation date: 2014.06

  • The Effect of Prior Health-related Employment on the Wages of Registered Nurses

    Yoo BK, Kim M, Sasaki T[International coauthorship]

    American Society of Health Economists, Fifth Biennial Conference, Los Angeles, California 

    Presentation date: 2014.06

  • The effect of prior health-related employment on the wages of registered nurses

    Yoo BK, Kim M, Sasaki T, Spetz J[International coauthorship]

    AcademyHealth Annual Research Meeting (ARM), Baltimore, Maryland 

    Presentation date: 2013.06

  • The impact of economic recession on the registered nurse workforce supply

    Yoo BK, Kim M, Sasaki T[International coauthorship]

    AcademyHealth Annual Research Meeting (ARM), Baltimore, Maryland 

    Presentation date: 2013.06

  • Need for expanded career-ladder programs to stabilize the registered nurse workforce supply

    Yoo BK, Lin TC, Sasaki T, Ward D[International coauthorship]

    American Public Health Association (APHA), 140th Annual Meeting & Exposition, San Francisco, California 

    Presentation date: 2012.10

  • Impact of Subsidy on Community-wide Health Outcomes: an Example of Influenza Vaccination

    Yoo BK (Discussant)

    Japan Health Economics Association (JHEA), 7th Annual Meeting, Kanagawa, Japan 

    Presentation date: 2012.07

  • Potential expanded ladder programs to stabilize the registered nurse workforce supply

    Yoo BK, Lin TC, Sasaki T[International coauthorship]

    AcademyHealth Annual Research Meeting (ARM), Orlando, Florida 

    Presentation date: 2012.06

  • Japan’s public universal health insurance system reform: lessons for achieving and maintaining universal health care coverage

    Yoo BK, Kasajima M, Hashimoto H[International coauthorship]

    International Economic Association (IEA), 16th World Congress, Beijing, China 

    Presentation date: 2011.07

  • How did individual behavioral responses affect the effectiveness of vaccine program during the 2009-2010 pandemic Influenza?

    Yoo BK, Kasajima M, Bhattacharya J[International coauthorship]

    International Health Economics Association (iHEA), 8th World Congress, Toronto, Canada 

    Presentation date: 2011.07

  • Optimal insurance consolidation within Japan’s public universal insurance system

    Yoo BK, Kasajima M, Hashimoto H[International coauthorship]

    International Health Economics Association (iHEA), 8th World Congress, Toronto, Canada 

    Presentation date: 2011.07

  • Disparities in Influenza Vaccine Preventable Hospitalization Rates in New York State

    Yoo BK, Vadhavkar V, Makino K, Sasaki T, Goldstein N, Kasajima M[International coauthorship]

    AcademyHealth Annual Research Meeting (ARM), Seattle, Washington 

    Presentation date: 2011.06

  • How did individual behavioral responses affect the comparative effectiveness of vaccine program during the 2009-2010 pandemic Influenza?

    Yoo BK, Kasajima M, Bhattacharya J[International coauthorship]

    AcademyHealth Annual Research Meeting (ARM), Seattle, Washington 

    Presentation date: 2011.06

  • Cost Effectiveness Analysis of School Influenza Vaccination Program

    Yoo BK

    National Immunization Conference (NIC), 45th National Immunization Conference, Washington, D.C. 

    Presentation date: 2011.03

  • Does Medicare managed care reduce racial/ethnic disparities in vaccination among Medicare elderly?

    Yoo BK, Fiscella K, Bennett N, Phelps CE, Bhattacharya J, Kasajima M, Szilagyi PG[International coauthorship]

    American Public Health Association (APHA), Philadelphia 

    Presentation date: 2009.11

  • Does English fluency affect ethnic disparities in influenza vaccination among the Medicare elderly during seasons with vaccine supply problems?

    Yoo BK, Fiscella K, Bennett N, Phelps CE, Bhattacharya J, Kasajima M, Szilagyi PG[International coauthorship]

    American Public Health Association (APHA), Philadelphia 

    Presentation date: 2009.11

  • Does mass media coverage on influenza increase disparities in influenza vaccine receipt among the Medicare elderly?

    Yoo BK, Berry A, Kasajima M[International coauthorship]

    Annual Research Conference, American Public Health Association (APHA), Philadelphia 

    Presentation date: 2009.11

  • Role of health economics in policy-making in the U.S.

    Yoo BK  [Invited]

    Virtual Center for Advanced Studies in Institution, Tokyo Foundation, Tokyo, Japan 

    Presentation date: 2009.07

  • Prevalence elastic demand for influenza vaccination among the U.S. elderly

    Yoo BK, Kasajima M, Phelps C[International coauthorship]

    International Health Economics Association, 7th World Congress, Beijing, China 

    Presentation date: 2009.07

  • Effects of ongoing epidemic on the annual influenza vaccination rate and vaccination timing among the Medicare elderly: 2000-2005

    Yoo BK, Kasajima M, Phelps C, Szilagyi P[International coauthorship]

    Annual Research Conference, AcademyHealth, Chicago 

    Presentation date: 2009.06

  • How to Improve Influenza Vaccination Rates

    Yoo BK  [Invited]

    Public Health Ground Rounds, jointly sponsored by the Center for Community Health and the Department of Community and Preventive Medicine, University of Rochester School of Medicine of Medicine and Dentistry 

    Presentation date: 2008.11

  • Does influenza vaccine supply affect racial/ethnic disparities in vaccination among Medicare elderly?

    Yoo BK, Bhattacharya J, Fiscella K, Phelps C, Bennett N, Szilagyi P[International coauthorship]

    Annual Research Conference, American Public Health Association (APHA), San Diego 

    Presentation date: 2008.10

  • Moral hazard in Influenza Vaccine Receipt Patterns among the Medicare Elderly

    Yoo BK, Kasajima M[International coauthorship]

    Annual Research Conference, American Public Health Association (APHA), San Diego 

    Presentation date: 2008.10

  • Did influenza vaccine supply shortage affect racial disparities in vaccination among Medicare elderly?

    Yoo BK, Bhattacharya J, Fiscella K, Phelps C, Bennett N, Szilagyi P[International coauthorship]

    Annual Research Conference, AcademyHealth, Washington D.C. 

    Presentation date: 2008.07

  • The Cost of Universal Influenza Vaccination of Children in Pediatric Practices

    Yoo BK, Szilagyi PG, Schaffer SJ, Humiston SG, Rand CM, Albertin CS, Vincelli P, Blumkin AK, Shone LP, Coleman MS  [Invited] [International coauthorship]

    National Vaccine Financing Stakeholders Meeting, Centers for Disease Control and Prevention, Washington D.C. 

    Presentation date: 2008.04

  • Lessons from Health Care Reform in the U.S.

    Yoo BK  [Invited]

    Japan Medical Association 

    Presentation date: 2007.07

  • Determinants of Health Expenditure Growth

    Yoo BK  [Invited]

    Economy and Society Research Group in Asahi Newspaper 

    Presentation date: 2007.07

  • Health care in the U.S.: Reality of the system and challenges

    Yoo BK  [Invited]

    Nippon Keidan-ren (trans. Japan Business Federation), Tokyo 

    Presentation date: 2007.07

  • Effects of mass media coverage on influenza vaccination timing among Medicare elderly

    Yoo BK, Holland ML, TestaWojteczko M, Szilagyi P[International coauthorship]

    Annual Research Conference, AcademyHealth, Orlando, FL 

    Presentation date: 2007.06

  • How Health Economics Can Contribute To Health Care Reform

    Yoo BK  [Invited]

    Symposium (Institute for Health Economics and Policy (IHEP), Japan Health Economics Association (JHEA)) 

    Presentation date: 2007.01

  • How can Genetic Risk Assessment based on Family History Improve Cost-Effectiveness of Preventive Care in Pediatric Clinics

    Yoo BK, Grosse S[International coauthorship]

    1st Annual Meeting of the Pediatrics Family History Project, Atlanta 

    Presentation date: 2006.02

  • Statistical Methods to Adjust for Self-selection Bias in Survey Data

    Yoo BK  [Invited]

    National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta 

    Presentation date: 2005.11

  • Cost-Effectiveness and Cost-Benefit of Screening Newborns for Congenital Adrenal Hyperplasia: Different Methods, Different Answers?

    Yoo BK, Grosse S[International coauthorship]

    27th Annual Meeting, the Society for Medical Decision Making, San Francisco 

    Presentation date: 2005.10

  • Cost-Effectiveness and Cost-Benefit of Screening Newborns for Congenital Adrenal Hyperplasia: Different Methods, Different Answers?

    Yoo BK, Grosse S, Waitzman N[International coauthorship]

    International Health Economics Association, 5th World Congress, Barcelona, Spain 

    Presentation date: 2005.07

  • Long-term Care and Insurance (Organizer: Professor Edward Norton, University of North Carolina)

    Yoo BK (Discussant)

    International Health Economics Association, 5th World Congress, Barcelona, Spain 

    Presentation date: 2005.07

  • Health Care Utilization of Children with Muscular Dystrophy

    Yoo BK, Grosse S[International coauthorship]

    Child Health Services Research Meeting, Boston 

    Presentation date: 2005.06

  • Cost-Effectiveness and Cost-Benefit of Screening Newborns for Congenital Adrenal Hyperplasia: Different Methods, Different Answers?

    Yoo BK, Grosse S[International coauthorship]

    3rd Annual Steven M. Teutsch Prevention Effectiveness Fellowship Conference, Atlanta 

    Presentation date: 2005.04

  • Adjusting Self-Selection of Health Intervention using Instrumental Variable Methods and Bivariate Probit Models

    Yoo BK  [Invited]

    Health Economics Discussion Series, Centers for Disease Control and Prevention, Atlanta 

    Presentation date: 2005.04

  • Determinants of Influenza Vaccination Timing

    Yoo BK  [Invited]

    Prevention Effectiveness Seminar Series, Centers for Disease Control and Prevention, Atlanta 

    Presentation date: 2005.04

  • General Overview of Health Economics Research in the United States

    Yoo BK

    Life Science Seminar Series, Stanford University 

    Presentation date: 2004.08

  • Determinants of Long-term Care Expenditures in OECD Countries

    Yoo BK

    Research in Progress Seminar, Stanford University 

    Presentation date: 2003.10

  • Impact of Health Policies on Long-term Nursing Care Expenditures in OECD Countries

    Yoo BK, Bundorf MK, Singer SJ, Laufer S, Osterhoff B[International coauthorship]

    Global Health Productivity, Annual Conference, Stanford University 

    Presentation date: 2003.06

  • Impact of Health Policies on Long-term Nursing Care Expenditures in OECD Countries

    Yoo BK, Bundorf MK, Singer SJ, Laufer S and Osterhoff B[International coauthorship]

    International Health Economics Association, 4th World Congress, San Francisco 

    Presentation date: 2003.06

  • The determinants of influenza vaccination timing

    Yoo BK, Frick DK[International coauthorship]

    International Health Economics Association, 4th World Congress, San Francisco 

    Presentation date: 2003.06

  • The impact of the public mandatory long-term care insurance program in Japan

    Yoo BK

    Annual Scientific Meeting, the Gerontological Society of America 

    Presentation date: 2001.11

  • The determinants of influenza vaccination timing among the elderly

    Yoo BK

    Annual Conference, the International Atlantic Economic Society 

    Presentation date: 2001.10

  • The determinants of influenza vaccination timing

    Yoo BK

    Annual Meeting, the Academy for Health Services Research and Health Policy 

    Presentation date: 2001.06

  • Knowing that an older woman has investment income in the absence of a measure of asset value

    Yoo BK

    The Gerontologist 39 (Special Issue 1: Abstract): p.135 

    Presentation date: 1999.10

  • Health Conditions of Ethnic Minorities in Japan

    Yoo BK  [Invited]

    Health and Human Rights Seminar Series, Center for Health and Human Rights, Harvard School of Public Health, Boston 

    Presentation date: 1997.04

▼display all

Research Projects

  • 特定保健指導実施率向上実証事業

    神奈川県庁健康医療局  特定保健指導実施率向上実証事業

    Project Year :

    2023.04
    -
    2025.03
     

    Byung-Kwang Yoo (PI), et al.

  • 予防医療教育プログラムの開発と評価

    神奈川県立保健福祉大学イノベーション政策研究センター 

    Project Year :

    2021
    -
    2024
     

    Byung-Kwang Yoo (PI), et al.

  • 新型コロナウイルス・パンデミックの公衆衛生対策

    神奈川県立保健福祉大学イノベーション政策研究センター 

    Project Year :

    2021
    -
    2024
     

    Byung-Kwang Yoo (PI), et al.

  • 相模川流域内の下水処理場における下水疫学調査に関する実証

    内閣官房  下水サーベイランス活用に関する実証事業

    Project Year :

    2022.07
    -
    2023.03
     

    Byung-Kwang Yoo (PI), et al.

  • School-Based Tele-Physiatry Assistance for Rehabilitative and Therapeutic Services (STARS) for Children with Special Health Care Needs Living in Rural and Underserved Communities [Grant #: R01-HS025714]

    Agency for Healthcare Research and Quality (AHRQ) 

    Project Year :

    2017.09
    -
    2022.07
     

    James P Marcin (PI), Byung-Kwang Yoo, et al.

  • Evaluation of California Department of Justice Grants Program to Improve Enforcement of Tobacco Laws

    California State Department of Justice (DOJ)  Contract

    Project Year :

    2019.01
    -
    2021.06
     

    Diana Cassady (PI), Byung-Kwang Yoo et al.

  • Economic Analysis for Prevention of Disease (EMPoD) [Grant #: U38PS004649]

    Centers for Disease Control and Prevention (CDC) 

    Project Year :

    2014.09
    -
    2019.09
     

    Jim G. Kahn (PI), Byung-Kwang Yoo, UCSF & Consortium (consortium includes 39 investigators across UCSF, Stanford, UC Berkeley, UC Davis, UC San Diego, San Francisco Department of Public Health (SFDPH), Health Strategies International, and PATH), et al.

  • A controlled trial of patient centered telepsychiatry interventions [Grant #: 1R01HS021477-01A1]

    Agency for Healthcare Research and Quality (AHRQ) 

    Project Year :

    2013.09
    -
    2018.09
     

    Peter M. Yellowlees (PI), Byung-Kwang Yoo, et al.

  • School Located Influenza Vaccinations for Children: Community-Wide Dissemination [Grant #: 1R18HS021163-01]

    Agency for Healthcare Research and Quality (AHRQ) 

    Project Year :

    2012.10
    -
    2018.07
     

    Peter G Szilagyi (PI), Byung-Kwang Yoo, et al.

  • Cardiovascular Disease Contract

    California State Department of Public Health (CDPH)  Contract

    Project Year :

    2017.01
    -
    2018.06
     

    Byung-Kwang Yoo (Co-PI), Jeffrey Hoch (Co-PI)

  • Pediatric Emergency Assistance to Newborns using Telehealth (PEANUT) [GRANT #: HRSA-13-166]

    Health Resources and Services Administration (HRSA)  Telehealth Network Grant Program/ Catalog of Federal Domestic Assistance (CFDA) No. 93.211

    Project Year :

    2013.10
    -
    2017.09
     

    Madan Dharmar (PI), Byung-Kwang Yoo, et al.

  • A Randomized Trial of Tele-Emergency Care for Seriously Ill Children

    Health Resources and Services Administration (HRSA)  Evidence-Based Tele-Emergency Network Grant Program: HRSA-14-138

    Project Year :

    2014.09
    -
    2017.08
     

    James Marcin (PI), Byung-Kwang Yoo, et al.

  • California Health Benefits Review Program (CHBRP) - Cost Impact Analysis

    California State  California State Legislature Contract

    Project Year :

    2012.07
    -
    2017.06
     

    Todd Gilmer (PI for 2012-2013), Ninez Ponce (PI for 2013-2017), Byung-Kwang Yoo, et al.

  • The social determinants of broad health outcomes among the Japanese population

    Japan Society for the Promotion of Science (JSPS)  Invitation Fellowship Programs for Research in Japan

    Project Year :

    2015.07
    -
    2015.09
     

    Byung-Kwang Yoo (Co-PI), Yasuki Kobayashi (Co-PI)

  • Factors affecting disparities in influenza vaccination among Medicare elderly [GRANT #: R03AG042646]

    National Institutes of Health (NIH)/National Institute on Aging (NIA) 

    Project Year :

    2013.04
    -
    2015.03
     

    Byung-Kwang Yoo (PI)

  • Economic evaluation of communication-assistive robots in health care fields

    Osaka University  Invitation Fellowship Programs for Research

    Project Year :

    2014.12
     
     
     

    Byung-Kwang Yoo (Co-PI), Hiroshi Ishiguro (Co-PI)

  • Pediatric Emergency Telemedicine Network [Grant #: RC1HD064098-01]

    Office for the Advancement of Telehealth, Health Resources and Services Administration (HRSA) 

    Project Year :

    2010.09
    -
    2014.08
     

    James Marcin (PI), Byung-Kwang Yoo, et al.

  • Adolescent Vaccination in the Medical Home [Grant #: 1 U01 IP00312-01]

    Centers for Disease Control and Prevention (CDC) 

    Project Year :

    2009.09
    -
    2012.08
     

    Peter G Szilagyi (PI), Byung-Kwang Yoo, et al.

  • Effects of Individual Behavioral Responses on Benefits of Influenza Vaccination [Grant #: 1K25AI073915]

    National Institute of Health (NIH)/National Institute of Allergy and Infectious Disease (NIAID)  Mentored Quantitative Research Development Award (K25)

    Project Year :

    2007.05
    -
    2012.04
     

    Byung-Kwang Yoo (PI), Peter G Szilagyi, Charles Phelps, John Treanor, Jay Bhattacharya, et al.

  • School-Based Influenza Immunization Program [Grant #: 055215-002]

    Centers for Disease Control and Prevention (CDC) 

    Project Year :

    2008.09
    -
    2011.09
     

    Andrew Doniger (PI), Byung-Kwang Yoo, et al.

  • Interim and Final Assessments of Influenza Vaccine Effectiveness [Grant #: IP08-00101SUPP10]

    Centers for Disease Control and Prevention (CDC) 

    Project Year :

    2008.08
    -
    2011.07
     

    John Treanor (PI), Byung-Kwang Yoo, et al.

  • Evaluation of Vaccination Reminder/Recall Systems for Adolescent Patients [Grant #: 1U01P000128]

    Centers for Disease Control and Prevention (CDC) 

    Project Year :

    2008.08
    -
    2010.12
     

    Peter G Szilagyi (PI), Byung-Kwang Yoo, et al.

  • Universal influenza immunization for children [Grant #: U01 00090]

    Centers for Disease Control and Prevention (CDC) 

    Project Year :

    2006.10
    -
    2009.09
     

    Peter G Szilagy (PI), Byung-Kwang Yoo, et al.

  • Center on the Demography and Economics of Health and Aging [Grant #: P30 AG017253]

    National Institute of Health (NIH)/National Institute of Aging (NIA) 

    Project Year :

    2002.10
    -
    2004.08
     

    Alan Garber (PI), Byung-Kwang Yoo, et al.

  • Comparative Health Fund (Stanford endowment)

    Asia-Pacific Research Center (APARC), Stanford University  Freeman Spogli Institute for International Study

    Project Year :

    2002.10
    -
    2004.08
     

    Alan Garber (PI), Byung-Kwang Yoo, et al.

  • The determinants of influenza vaccination timing

    Agency for Healthcare Research and Quality  Centers for Medicare and Medicaid Services: Health Services Dissertation Research [Grant #: 30P 912953]

    Project Year :

    2001.02
    -
    2002.02
     

    Byung-Kwang Yoo (PI)

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Misc

  • 医療経済学による下水疫学の評価 ー 下水疫学最前線の6人が斬る!イノベーションと社会実装の課題

    Yoo BK

    月刊下水道   47 ( 9 ) 70 - 72  2024.08  [Invited]

  • 社会保障・社会福祉こそ経済政策のかなめ~日本再生のための「プランB」とは~

    Yoo BK

    福祉のひろば 2024年5月号    2024.04  [Invited]

  • 産学官連携で取り組む、下水疫学を活用した神奈川県の新型コロナ対策と政策展開. 「シン・ゲスイドウ-気候変動に立ち向かう下水道の“シン”展開-」特集

    Yoo BK

    月刊下水道   2023年1月号   74 - 78  2022.12  [Invited]

  • 医療・教育・芸術が融合した予防医療が地方経済を救う」,特集企画「ポスト・コロナ時代の公衆衛生医療

    Yoo BK

    保健の科学   64 ( 3 )  2022  [Invited]

  • ボアールの演劇を予防医療教育に——過去を上書きし、自己肯定感を高め、現代を変える<インタビュー>

    Yoo BK

    ひょうご部落解放   ( 180号(2021年秋) ) 61 - 70  2021  [Invited]

  • 新型コロナの院内・施設内感染予防対策としての医療機関・介護施設等のスタッフ対象の定期的PCR検査ガイド―経営改善策としての「PCR検査への投資」について医療経済学からの提言

    Yoo BK

    https://ig.lsbm.org/assets/files/ig-20201222-yoo.pdf    2020.12

  • 日本に於ける新型コロナウイルス・パンデミックの抗体検査結果の比較と分析

    Yoo BK

    新型コロナウィルス抗体検査機利用者協議会(2020年7月16日)参議院予算委員会資料補足資料    2020.07

  • Health Economics’ Potential Contribution to Japan’s Health Care Reform?

    Yoo BK

    Monthly Institute for Health Economics and Policy   152   1 - 10  2007  [Invited]

  • How can Health Economics contribute to Health Care Reform?

    Yoo BK

    Iryo keizai kenkyu kikou (trans. Institute for Health Economics and Policy)   19 ( 1 ) 55 - 67  2007  [Invited]

  • How Economic Evaluation Research can Influence Policy-Making Processes - Differences between Japan and the U.S.

    Yoo BK

    Ronza   146   103 - 109  2007  [Invited]

  • Self-selection and evaluation of influenza vaccination effectiveness among elderly [Letter to the Editor]

    Byung-Kwang Yoo, Scott Grosse, Kevin D Frick

    Vaccine   24 ( 40-41 ) 6374 - 5  2006.09  [International journal]

    Authorship:Lead author, Corresponding author

    PubMed

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Syllabus

▼display all

Teaching Experience

  • Seminar(Health evaluation science)

    School of Human Sciences, Waseda University (Online Degree Program)  

    2024
    -
    Now
     

  • Seminar I/II (Health evaluation science)

    School of Human Sciences, Waseda University  

    2024
    -
    Now
     

  • Health evaluation science A/B

    Graduate School of Human Sciences, Waseda University  

    2024
    -
    Now
     

  • Health evaluation science(2) A/B

    Graduate School of Human Sciences, Waseda University  

    2024
    -
    Now
     

  • Health evaluation science(1) A/B

    Graduate School of Human Sciences, Waseda University  

    2024
    -
    Now
     

  • Health evaluation science

    Graduate School of Human Sciences, Waseda University  

    2023
    -
    Now
     

  • Scientific significance of preventive health care

    School of Human Sciences, Waseda University (Online Degree Program)  

    2023
    -
    Now
     

  • Theory and practice of health education

    School of Human Sciences, Waseda University  

    2023
    -
    Now
     

  • Scientific significance of preventive health care

    School of Human Sciences, Waseda University  

    2023
    -
    Now
     

  • Health Education Theater

    School of Health Innovation, Kanagawa University of Human Services  

    2021
    -
    Now
     

  • Introduction to Social Science for a Carbon Neutral Society (Life Science)

    Global Education Center, Waseda University  

    2024
    -
     
     

  • Advanced Topics in Research Ethics for Human Sciences(D)

    Graduate School of Human Sciences, Waseda University  

    2024
    -
     
     

  • Seminar (Basic) I 14

    School of Human Sciences, Waseda University  

    2023.04
    -
    2023.07
     

  • Advisor for Masters Thesis

    School of Health Innovation, Kanagawa University of Human Services  

    2022.04
    -
    2023.03
     

  • Advisor for Masters Thesis

    School of Health Innovation, Kanagawa University of Human Services  

    2021.04
    -
    2023.03
     

  • Critical Assessment in Health Economics

    School of Health Innovation, Kanagawa University of Human Services  

    2021.04
    -
    2023.03
     

  • Critical Assessment in Health Policy

    Kanagawa University of Human Services  

    2021.04
    -
    2023.03
     

  • Advisor for Masters Thesis

    School of Health Innovation, Kanagawa University of Human Services  

    2020.04
    -
    2021.03
     

  • Health Technology II

    School of Health Innovation, Kanagawa University of Human Services  

    2020.04
    -
    2021.03
     

  • Topics in Public Health seminar

    Department of Public Health Sciences, University of California Davis  

    2017
    -
    2020
     

  • Advisor for Masters Thesis

    Department of Public Health Sciences, University of California Davis  

    2012
    -
    2020
     

  • Health Education Theater

    Department of Public Health Sciences, University of California, Davis  

    2018
    -
    2019
     

  • Critical Assessment in Health Policy and Health Economics

    Department of Public Health Sciences, University of California Davis  

    2013
    -
    2019
     

  • PhD dissertation committee

    Department of Public Health Sciences, University of California Davis  

    2014
    -
    2018
     

  • Economic Evaluation in Health Care

    Department of Public Health Sciences, University of California Davis  

    2011
    -
    2016
     

  • Economic evaluation research for health policy making – Cases in the U.S.

    The University of Tokyo  

    2015.07
    -
    2015.08
     

  • The Economics of Health and Health Care

    Department of Public Health/Health Policy, The University of Tokyo  

    2015.07
    -
    2015.08
     

  • Mentoring Post Doctoral Fellows

    Department of Public Health Sciences, University of California Davis  

    2012
    -
    2015
     

  • Seminar in Health Policy and Health Economics

    Department of Public Health Sciences, University of California Davis  

    2012
    -
    2014
     

  • Topics in Public Health seminar

    Department of Public Health Sciences, University of California Davis  

    2012
    -
    2013
     

  • Advisor for Masters Thesis

    Department of Community and Preventive Medicine, University of Rochester School of Medicine of Medicine and Dentistry  

    2008
    -
    2011
     

  • Advanced Health Economics I

    Department of Community and Preventive Medicine, University of Rochester School of Medicine of Medicine and Dentistry  

    2007
    -
    2011
     

  • Advanced Health Economics II: Industrial Organization of Health Care Markets

    Department of Community and Preventive Medicine, University of Rochester School of Medicine of Medicine and Dentistry  

    2006
    -
    2011
     

  • Cost-Effectiveness Research

    Department of Community and Preventive Medicine, University of Rochester School of Medicine of Medicine and Dentistry  

    2009
    -
    2010
     

  • Advisor for Masters Thesis

    Department of Biostatistics, University of Rochester  

    2009
    -
     
     

  • PhD dissertation committee

    Department of Community and Preventive Medicine, University of Rochester School of Medicine of Medicine and Dentistry  

    2007
    -
    2009
     

  • Quality of Care and Risk Adjustment

    Department of Community and Preventive Medicine, University of Rochester School of Medicine of Medicine and Dentistry  

    2006
    -
    2007
     

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Social Activities

  • 下水道疫学研究会の創設・毎月(2024年度から隔月)の研究会を主宰

    2021.12
    -
    Now

  • 神奈川県内の下水処理場で実施している下水サーベイランス(下水中のウイルス濃度、変異株の存在割合について、神奈川県庁のホームページで公表)

    新型コロナ・下水疫学調査について https://www.pref.kanagawa.jp/docs/ga4/covid19/simulation.html; 新型コロナ・予測モデルによる重症者数等シミュレーション https://www.pref.kanagawa.jp/docs/ga4/covid19/simulation_model.html 

    2021.11
    -
    Now

  • 新型コロナウイルス・パンデミック関連政策のアドバイザー

    神奈川県庁 

    2021.05
    -
    Now

  • 神奈川県大規模接種会場におけるワクチン接種業務への協力

    2021.08
    -
    2021.09

  • 新型コロナウイルス・パンデミック関連政策のアドバイザー

    東京都世田谷区役所  特に、PCR検査の実施に関する政策立案のための助言・指導 

    2020.08
    -
    2021.03

  • 在日本(東京)米国大使館:新型コロナウイルス・パンデミックに関連する独自のデータ分析と対策案を定期的に提出

    2020.09
    -
    2021.02

  • Bay Area Social Science Seminarの創設・主宰

    2012.11
    -
    2019.10

  • 米国連邦政府 国立衛生研究所(NIH)

    競争的学術研究助成資金 審査委員 

    2017
    -
    2019

  • 医療経済学評価方法の教育

    カリフォルニア州公衆衛生局行政官(疫学等の公衆衛生専門家)対象 

    2017
    -
    2018

  • 常任委員(医療経済学専門家)(California Health Benefits Review Program (CHBRP))

    2012
    -
    2017

  • 法案内容(小児予防接種)専門家(California Health Benefits Review Program (CHBRP))

    2011
    -
     

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Academic Activities

  • 神奈川県内の下水処理場で実施している下水サーベイランス(下水中のウイルス濃度、変異株の存在割合について、神奈川県庁のホームページで公表)

    新型コロナ・下水疫学調査について https://www.pref.kanagawa.jp/docs/ga4/covid19/simulation.html; 新型コロナ・予測モデルによる重症者数等シミュレーション https://www.pref.kanagawa.jp/docs/ga4/covid19/simulation_model.html  

    2021.11
    -
    Now
  • International Society for Pharmacoeconomics and Outcomes Research (ISPOR)

    Conference Paper Reviewer for 23rd Annual International Meeting  

    2018
    -
     
  • American Society of Health Economists (ASHEcon)

    Conference Paper Reviewer  

    2018
    -
     
  • 報告書 “韓国における国民皆医療保険制度”を作成

    提出先:東京大学大学院医学系研究科公共健康医学専攻  

    2016.02
    -
     
  • Swiss National Science Foundation

    Proposal reviewer  

    2014
    -
    2015
  • Michael Smith Foundation for Health Research

    Proposal reviewer  

    2014
    -
     
  • Robert Wood Johnson Foundation

    Proposal reviewer  

    2012
    -
    2014
  • Mortality and Morbidity Weekly Review (MMWR: published by CDC): Supplement issue for the 2004 National Syndromic Surveillance Conference Proceedings

    (2005)  

  • Lancet

    (2005)  

  • Ophthalmic Epidemiology

    (2009)  

  • Influenza and Other Respiratory Viruses

    (2010)  

  • Women & Health

    (March 2012)  

  • Computational and Mathematical Organization Theory

    (April 2012)  

  • PLOS ONE

    (August 2013)  

  • Arthritis Care & Research

    (December 2013; March 2012; February 2012; December 2011)  

  • Frontiers in Public Health Services and Systems Research

    (June 2015)  

  • Journal of Adolescent Health

    (June 2015)  

  • Journal of Health Economics

    (August 2015)  

  • Health Affairs

    (October 2015; 2003)  

  • Critical Care Medicine

    (January 2016)  

  • CHEST

    (April 2016)  

  • UC Davis Health Student Review

    (March 2017)  

  • Inquiry

    (March 2017)  

  • Pediatrics

    (September 2017)  

  • Health Economics

    (September 2017; January 2017; 2010)  

  • Health Services Research

    (October 2017; February 2017; June 2016; 2010)  

  • Academic Pediatrics

    (September 2018; June 2017; January 2017; August 2016)  

  • BMC Health Services Research

    (November 2018; May 2017; March 2017)  

  • Health Policy

    (March 2019; November 2013)  

  • American Journal of Preventive Medicine

    (May 2019;February 2018;February 2014;2004)  

  • Vaccine

    (June 2018; December 2017; March 2017; January 2017; June 2016; September 2015; July 2014; June 2014; October 2013; August 2013; June 2014; 2010)  

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Sub-affiliation

  • Faculty of Human Sciences   School of Human Sciences (Online Degree Program)

  • Faculty of Human Sciences   Graduate School of Human Sciences

  • Affiliated organization   Global Education Center