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Risk of Polypharmacy Estimated with a Large Claims Database: Fracture Associated with Polypharmacy of Fall-risk-inducing Medications

Research Project

Project/Area Number 15K08121
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Medical pharmacy
Research InstitutionTokushima Bunri University

Principal Investigator

Iihara Naomi  徳島文理大学, 薬学部, 教授 (40412390)

Co-Investigator(Kenkyū-buntansha) 吉田 知司  徳島文理大学, 保健福祉学部, 教授 (80220656)
Research Collaborator Ohara Masaki  
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywordsポリファーマシー / 骨折 / 高齢者 / 中枢神経系用薬 / 多剤併用 / 受診医療機関 / 骨粗鬆症 / 副作用 / レセプトデータ / 薬剤疫学 / 転倒
Outline of Final Research Achievements

Risk of fragility fracture associated with concomitant use of fall-risk-inducing medications (central nervous system [CNS) agents] was estimated with a large claims database. Approximately 450,000 older people who had lived without hospitalization for at least 13 months and had not used opioids but subsequently sustained fragility fractures from May 2013 to September 2014 were analysed.
Risk of fragility fracture rose almost linearly with increasing number of prescribed CNS agents. The increased risk was robust across distinct subgroups. The risk of fragility fracture at least doubled compared with non-use if five or more CNS agents were used concomitantly. The number of CNS agents increased in parallel with the number of hospitals or clinics patients visited. People in Japan can visit as many hospitals or clinics as they prefer, and as often as they like. Sharing of medication records across medical institutions is needed.

Academic Significance and Societal Importance of the Research Achievements

本研究で用いた大規模レセプト情報「レセプト情報・特定健診等情報データベース(NDB Japan)」は、悉皆性にすぐれ、国民が使用した医薬品を、処方された医療機関に関係なく、患者ごとにレトロスペクティブに解析することが可能なデータベースである。この情報を用いて、脳に作用するふらつきを及ぼす薬を何成分も併用すると、軽微な力で生じる骨折の発症リスクが高まることを高齢者において示した。日本は、国民が望む医療機関を制限なく受診でき多くの医薬品が併用されがちである。服薬情報の、施設を越えた一元的管理を可能とする仕組みの完成が急がれる。

Report

(6 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Products Report
  • Research Products

    (12 results)

All 2021 2020 2019 2018 2017 2016 Other

All Journal Article (5 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results) Remarks (1 results)

  • [Journal Article] Fracture risk increased by concurrent use of central nervous system agents in older people : Nationwide case-crossover study2021

    • Author(s)
      Eri Ohara, Yoshinori Bando, Tomoji Yoshida, Masaki Ohara, Yutaka Kirino, and Naomi Iihara
    • Journal Title

      Research in Social and Administrative Pharmacy

      Volume: 17 Issue: 6 Pages: 1181-1197

    • DOI

      10.1016/j.sapharm.2020.09.007

    • Related Report
      Products Report
    • Peer Reviewed
  • [Journal Article] Central Nervous System Agent Classes and Fragility Fracture Risk among Elderly Japanese Individuals in a Nationwide Case-Crossover Design Study2020

    • Author(s)
      Eri Ohara, Yoshinori Bando, Tomoji Yoshida, Masaki Ohara, Yutaka Kirino, and Naomi Iihara
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 43 Issue: 2 Pages: 340-347

    • DOI

      10.1248/bpb.b19-00737

    • NAID

      130007793777

    • ISSN
      0918-6158, 1347-5215
    • Year and Date
      2020-02-01
    • Related Report
      Products Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fragility Fractures in Older People in Japan Based on the National Health Insurance Claims Database2019

    • Author(s)
      Iihara Naomi、Ohara Eri、Bando Yoshinori、Yoshida Tomoji、Ohara Masaki、Kirino Yutaka
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 42 Issue: 5 Pages: 778-785

    • DOI

      10.1248/bpb.b18-00974

    • NAID

      130007641445

    • ISSN
      0918-6158, 1347-5215
    • Year and Date
      2019-05-01
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 高齢者におけるポリファーマシーと転倒に関連した骨折2018

    • Author(s)
      飯原なおみ
    • Journal Title

      香川県薬剤師会会誌

      Volume: 168 Pages: 57-59

    • Related Report
      2017 Research-status Report
  • [Journal Article] Polypharmacy of medications and fall-related fractures in older people in Japan:a comparison between driving-prohibited and driving-cautioned medications2016

    • Author(s)
      Naomi Iihara, Yoshinori Bando, Masaki Ohara, Tomoji Yoshida, Takayuki Nishio, Taketo Okada, and Yutaka Kirino
    • Journal Title

      Journal of Clinical Pharmacy and Therapeutics

      Volume: - Issue: 3 Pages: 273-278

    • DOI

      10.1111/jcpt.12381

    • Related Report
      2016 Research-status Report 2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 日本の高齢者における脆弱性骨折の発症2019

    • Author(s)
      飯原なおみ、小原依里、坂東義教、吉田知司、大原昌樹、桐野豊
    • Organizer
      日本薬学会 第139年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 日本の高齢者における中枢神経系用薬のポリファーマシーと脆弱性骨折の発症2019

    • Author(s)
      小原依里、坂東義教、吉田知司、大原昌樹、桐野豊、飯原なおみ
    • Organizer
      日本薬学会 第139年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Effect of pro re nata medication usage on estimation of fragility fracture risk associated with concomitant central nervous system medications2019

    • Author(s)
      Eri Ohara, Yoshinori Bando, Tomoji Yoshida, Masaki Ohara, Yutaka Kirino, and Naomi Iihara
    • Organizer
      ISPE's 12th Asian Conference on Pharmacoepidemiology
    • Related Report
      Products Report
    • Int'l Joint Research
  • [Presentation] 日本人高齢者における薬効別中枢神経系用薬の脆弱性骨折発症リスク2019

    • Author(s)
      小原 依里, 坂東 義教, 吉田 知司, 大原 昌樹, 桐野 豊, 飯原 なおみ
    • Organizer
      日本社会薬学会第38年会
    • Related Report
      Products Report
  • [Presentation] ポリファーマシーと地域・多職種連携2018

    • Author(s)
      飯原なおみ
    • Organizer
      第149回学術研修会(高松市薬剤師会)
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 医薬品使用の適正化に向けて2017

    • Author(s)
      飯原なおみ
    • Organizer
      平成29年度地域保健福祉従事者会議
    • Related Report
      2017 Research-status Report
    • Invited
  • [Remarks] researchmap

    • URL

      https://researchmap.jp/read0208411/

    • Related Report
      2018 Annual Research Report

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Published: 2015-04-16   Modified: 2022-04-15  

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