写真a

KAMIMURA Kazuki

Position

Associate Professor

Research Field

Humanities & Social Sciences / Economic policy

External Link

Campus Career 【 display / non-display

  • KONAN UNIVERSITY   Hirao School of Management   Associate Professor

    2019.4

 

Papers 【 display / non-display

  • Universal health coverage in the context of population ageing: catastrophic health expenditure and unmet need for healthcare

    Shohei Okamoto, Mizuki Sata, Megumi Rosenberg, Natsuko Nakagoshi, Kazuki Kamimura, Kohei Komamura, Erika Kobayashi, Junko Sano, Yuzuki Hirazawa, Tomonori Okamura, Hiroyasu Iso

    Health Economics Review   14 ( 1 )   2024.1

     More details

    Publisher:Springer Science and Business Media LLC  

    Abstract

    Background

    Universal health coverage means that all people can access essential health services without incurring financial hardship. Even in countries with good service coverage and financial protection, the progress towards universal health coverage may decelerate or be limited with respect to the growing older population. This study investigates the incidence/prevalence, determinants, and consequences of catastrophic health expenditure (CHE) and unmet need for healthcare and assesses the potential heterogeneity between younger (≤ 64 years) and older people (65 years≤).

    Methods

    Utilising an annual nationally representative survey of Japanese aged 20 years and over, we estimated the incidence of CHE and unmet need for healthcare using disaggregated estimates by household members’ age (i.e. ≤64 years vs. 65 years≤) between 2004 and 2020. Using a fixed-effects model, we assessed the determinants of CHE and unmet need along with the consequences of CHE. We also assessed the heterogeneity by age.

    Results

    Households with older members were more likely to have their healthcare needs met but experienced CHE more so than households without older members. The financial consequences of CHE were heterogeneous by age, suggesting that households with older members responded to CHE by reducing food and social expenditures more so than households without older members reducing expenditure on education. Households without older members experienced an income decline in the year following the occurrence of CHE, while this was not found among households with older members. A U-shaped relationship was observed between age and the probability of experiencing unmet healthcare need.

    Conclusions

    Households with older members are more likely to experience CHE with different financial consequences compared to those with younger members. Unmet need for healthcare is more common among younger and older members than among their middle-aged counterparts. Different types and levels of health and financial support need to be incorporated into national health systems and social protection policies to meet the unique needs of individuals and households.

    DOI: 10.1186/s13561-023-00475-2

    researchmap

    Other Link: https://link.springer.com/article/10.1186/s13561-023-00475-2/fulltext.html

  • Economic effects of healthy ageing: functional limitation, forgone wages, and medical and long-term care costs Reviewed International coauthorship

    Shohei Okamoto, Haruka Sakamoto, Kazuki Kamimura, Kohei Komamura, Erika Kobayashi, Jersey Liang

    Health Economics Review   13 ( 28 )   2023.5

     More details

  • Financial incentives for exercise and medical care costs Reviewed

    Kazuki Kamimura, Shohei Okamoto, Kenichi Shiraishi, Kazuto Sumita, Kohei Komamura, Akiko Tsukao, Shinya Kuno

    International Journal of Economic Policy Studies   17   95 - 116   2022.11

     More details

    Authorship:Lead author, Corresponding author   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s42495-022-00093-6

    researchmap

    Other Link: https://link.springer.com/article/10.1007/s42495-022-00093-6/fulltext.html

  • COVID-19 vaccine hesitancy and vaccine passports: a cross-sectional conjoint experiment in Japan Reviewed

    Okamoto S, Kamimura K, Komamura K

    BMJ Open   12 ( e060829 )   e060829 - e060829   2022.6

     More details

    Publisher:BMJ  

    Objectives

    While the development of vaccines against the Novel Coronavirus (COVID-19) brought hope of establishing herd immunity and ending the global pandemic, vaccine hesitancy can hinder the progress towards herd immunity. In this study, by analysing the data collected when citizens undergo public health restrictions due to the pandemic, we assess the determinants of vaccine hesitancy, reasons for hesitation and potential effectiveness of vaccine passports used to relax public health restrictions on mitigating vaccine hesitancy.

    Design

    Cross-sectional study, longitudinal study and conjoint experimental design.

    Setting

    An online survey conducted in Japan in July 2021.

    Participants

    A demographically representative sample of 5000 Japanese adults aged 20–74.

    Primary outcome measures

    COVID-19 vaccination intention

    Results

    We found that about 30% of respondents did not intend to get vaccinated or had not yet decided, with major reasons for vaccine hesitancy relating to concerns about the safety and side effects of the vaccine. In line with previous findings, younger age, lower socioeconomic status, and psychological and behavioural factors such as weaker COVID-19 fear were associated with vaccine hesitancy. Easing of public health restrictions such as travel, wearing face masks and dining out at night was associated with an increase in vaccine acceptance by 4%–10%. Moreover, we found that more than 90% of respondents who intended to get vaccinated actually received it while smaller proportions among those undecided and unwilling to get vaccinated did so.

    Conclusion

    With a major concern about vaccine safety and side effects, interventions to mitigate against these may help to reduce vaccine hesitancy. Moreover, when citizens are imposed with restrictions, vaccine passports that increase their freedom may be helpful to increase vaccination rates.

    DOI: 10.1136/bmjopen-2022-060829

    researchmap

  • Daily steps and healthcare costs in Japanese communities Reviewed

    Shohei Okamoto, Kazuki Kamimura, Kenichi Shiraishi, Kazuto Sumita, Kohei Komamura, Akiko Tsukao, Shoko Chijiki, Shinya Kuno

    Scientific Reports   11 ( 1 )   2021.7

     More details

    Joint Work

    Publisher:Springer Science and Business Media LLC  

    <title>Abstract</title>Physical inactivity is a pandemic that requires intensive, usually costly efforts for risk reduction of related chronic diseases. Nevertheless, it is challenging to determine the effectiveness of physical activity in healthcare cost reduction based on existing literature. Therefore, this study aimed to investigate the impact of physical activity (daily steps) on healthcare costs utilising the data retrieved from a health promotion project (<italic>the e-wellness Project</italic>, held in three municipalities in Japan). Evaluating the effects of daily steps, measured by pedometers, on healthcare costs by a quasi-experimental approach among participants aged 40–75 years (about 4000 person-years of observation, between 2009 and 2013), we found that a one-step-increase in the annual average daily step reduced outpatient healthcare costs by 16.26 JPY (≒ 0.11 GBD) in the short run. Based on the assumption of a dynamic relationship between the health statuses in multiple years, the long-run effects of daily steps on healthcare costs were estimated at 28.24 JPY (≒ 0.20 GBD). We determined the health benefits of walking in a sample of middle-aged and older Japanese adults by our findings that an increase in step counts reduced healthcare costs.

    DOI: 10.1038/s41598-021-94553-2

    researchmap

    Other Link: https://www.nature.com/articles/s41598-021-94553-2

display all >>

Books and Other Publications 【 display / non-display

  • 新・福祉の総合政策

    駒村康平,上村一樹,渡辺久里子( Role: Joint author)

    創成社  2018.10  ( ISBN:978-4-7944-3193-6

     More details

Review Papers (Misc) 【 display / non-display

  • Vaccination or restriction?: COVID-19 vaccine hesitancy and vaccine passports

    Shohei Okamoto, Kazuki Kamimura, Kohei Komamura

    medRxiv   2021.9

     More details

    Publisher:Cold Spring Harbor Laboratory  

    Abstract

    Objectives

    While the development of vaccines against the novel coronavirus (COVID-19) brought the hope of establishing herd immunity, which might help end the global pandemic, vaccine hesitancy can hinder the progress towards herd immunity. In this study, we assess the determinants of vaccine hesitancy, reasons for hesitation, and effectiveness of vaccine passports in relaxing public health restrictions.

    Methods

    Through an online survey that includes a conjoint experiment of a demographically representative sample of 5,000 Japanese adults aged 20–74, we assess the determinants of vaccine hesitancy, reasons for hesitation, and effectiveness of hypothetical vaccine passports.

    Results

    We found that about 30% of respondents did not intend to vaccinate or have not yet decided, with major reasons for vaccine hesitancy being related to concerns about the safety and side effects of the vaccine. In line with previous findings, younger age, lower socioeconomic status, and psychological factors such as weaker COVID-19 fear were associated with vaccine hesitancy. The easing of public health restrictions such as travel, wearing face masks, and dining out at night was associated with an increase in vaccine acceptance by 4–10%.

    Conclusion

    Vaccine hesitancy can be reduced by mitigating the concerns about vaccine safety and side effects, as well as by relaxing public health restrictions. However, the feasibility of vaccine passports needs to be sufficiently assessed, taking the ethical issues of passports and the public health impacts of the relaxation of restrictions into careful consideration.

    Strengths and limitations of this study

    □This study includes timely data on COVID-19 vaccine hesitancy, obtained from a demographically representative sample of 5,000 Japanese adults.

    □A conjoint experiment allows assessing the effectiveness of easing public health restrictions on vaccine acceptance.

    □Actual behaviour may diverge from the survey responses or fluctuate due to the pandemic situation and the timing of the survey.

    □Results may not be applicable in other countries, since the pandemic situation, government responses to the pandemic, and reasons for vaccine hesitancy can vary across countries.

    DOI: 10.1101/2021.09.15.21263559

    researchmap

  • 経済学基礎教育における学修支援としてのeラーニング利用と教育効果 (人材育成のための授業紹介 : 経済学)

    児王 俊介, 上村 一樹, 佐藤 崇

    大学教育と情報   2015 ( 1 )   26 - 29   2015.6

     More details

    Publisher:私立大学情報教育協会  

    CiNii Article

    researchmap

Presentations 【 display / non-display

  • 負債が健康等に与える影響

    駒村康平, 上村一樹

    日本経済政策学会 第80回全国大会  2023.5 

     More details

    Event date: 2023.5

    researchmap

  • A Cost-effectiveness Analysis of Incentivised Exercise Program

    Kazuki KAMIMURA;Shohei OKAMOTO;Kenichi SHIRAISHI;Kazuto SUMITA;Kohei KOMAMURA;Akiko TSUKAO;Shinya KUNO

    The 20th International Conference of the Japan Economic Policy Association  (fully online at the JEPA homepage)  2021.11  The Japan Economic Policy Association

     More details

    Event date: 2021.11

    researchmap

  • Daily steps and healthcare costs in Japanese communities: Causal inference

    隅田和人,岡本翔平,上村一樹,白石憲一

    日本経済学会2020年度秋季大会  (オンライン開催)  日本経済学会

     More details

    Event date: 2020.10

  • 準拠集団の所得水準と主観的厚生―相対所得仮説の検証―

    白石 憲一, 隅田 和人, 上村 一樹, 岡本 翔平

    日本経済学会2018年度秋季大会  2018.9 

     More details

  • 準拠集団の所得水準と主観的厚生―相対所得仮説の検証―

    白石 憲一・隅田 和人・上村 一樹・岡本 翔平

    日本経済学会2018年度秋季大会 

     More details

    Event date: 2018.9

    researchmap

display all >>

Academic Awards Received 【 display / non-display

  • 生活経済学会奨励賞

    2015.6   生活経済学会  

    上村一樹

     More details

Grant-in-Aid for Scientific Research 【 display / non-display

  • 健康診断受診率向上政策の費用対効果分析

    2016.4 - 2020.3

    JSPS Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research(C)

      More details

    自治体に対するアンケート調査、インターネット調査、既存の社会調査を組み合わせることにより、健康診断の受診率を効果的に向上させる方法に関する費用対効果分析を行う。

Other External funds procured 【 display / non-display

  • 主観的な余命の過小見積もりによる老後資金枯渇問題を解消するための効果的な情報提供

    2023.6 - 2024.6

    公益財団法人村田学術振興財団  第39回(2023年度)公益財団法人村田学術振興財団 研究助成 

    上村一樹、駒村康平

      More details

    Authorship:principal_investigator 

  • 生命保険受け取り時の「終身年金パズル」の実態ー長寿リスクの誤認がおよぼす影響ー

    2023.6 - 2024.3

    公益財団法人 生命保険文化センター  2023年度 生命保険に関する研究助成 

    上村一樹、駒村康平

      More details

    Authorship:principal_investigator 

  • 地域社会のソーシャルキャピタルと社会保障制度への態度の関係

    2018.1 - 2018.12

    一般財団法人 全国勤労者福祉・共済振興協会  2018年度公募委託調査研究 

    上村一樹

      More details

    Authorship:principal_investigator 

Joint and Contract research activities (Public) 【 display / non-display

  • 地域社会のソーシャルキャピタルと社会保障制度への態度の関係

    Offer organization:全労済  General funded research

    2018.1 - 2018.12

      More details

    欧米諸国同様、わが国でも、社会的な分断の発生、それによる社会保障をはじめとした諸制度への悪影響が危惧されている。本研究では、社会的な分断がもたらす悪影響を回避する鍵として、地域におけるソーシャルキャピタルに注目する。具体的には、ソーシャルキャピタルが豊かな地域に住んでいると、自分自身に直接の利益がないものも含め、社会保障制度に対して前向きな態度になる、という仮説をデータ分析によって検証する。

  • スポーツ庁平成27年度総合特区推進費補助金(スポーツによる地域活性化推進事業)「スポーツウエルネスサービスによる地域活性化モデルの構築」

    General funded research

    2015.4 - 2016.3

  • 平成27年度インセンティブの制度化を見据えた健幸ポイント等の予防事業の類型化のための調査検討

    General funded research

    2015.4 - 2016.3

  • 文部科学省委託「平成26年度スポーツを通じた地域コミュニティ活性化促進事業 健康づくり無関心層も含めた多くの国民がスポーツライフ化を可能とするインセンティブ方法の検討」

    General funded research

    2014.4 - 2015.3

  • 国民健康保険調整交付金事業「平成25年度健康ポイント制度社会実験事業」

    General funded research

    2013.4 - 2014.3