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Study on the optimization of medical resources for the elderly using the National Database of Receipts (NDB)

Research Project

Project/Area Number 19K12870
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 90140:Medical technology assessment-related
Research InstitutionJuntendo University

Principal Investigator

Nojiri Shuko  順天堂大学, 革新的医療技術開発研究センター, 准教授 (80763466)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords高齢者 / 多剤併用 / 大腿骨骨折 / バイアス感度分析 / レセプトデータベース / 未測定交絡 / 感度分析 / データベース / 臨床疫学 / バイアス / NDB / ポリファマシー
Outline of Research at the Start

我が国の高齢化率は年々上昇しており,平成30年高齢社会白書によると 65歳以上人口は、3,515万人となり、総人口に占める割合(高齢化率)も27.7%である.高齢化による合併症の増加に伴い多剤併用(polypharmacy)が生じやすくなっており,多剤併用による医療費の増大と同時に有害事象の増加が懸念されている.本研究では,60歳以上の高齢者を対象として睡眠薬・抗精神病薬での多剤併用と骨折リスク,睡眠時無呼吸症候群患者の睡眠薬使用実態についてレセプトデータ(National DataBase)を用いて調査する.

Outline of Final Research Achievements

Research findings include the following four studies, two of which have been accepted for publication in international journals and the remainder are currently being submitted to international journals. A case-control study of SGLT2 inhibitors and femur fracture risk was conducted in elderly subjects using a large claim database. The odds ratio for drug was 0.83 (95% CI: 0.55-1.26). Second, the risk of femur fracture was assessed for Suvorexant, with an odds ratio of 0.86, 95% CI 0.61-1.20].Third, in the elderly with multiple medications, the risk of femur fracture with multiple medications was higher in the 60s, with increased risk in Parkinson's disease medications, ophthalmology, and musculoskeletal disease.Furthermore, in the study of bias assessment in epidemiological studies, with a particular focus on selection bias, he has developed a sensitivity analysis method based on causal inference, which has been submitted to J. Biometrics and is currently under peer review.

Academic Significance and Societal Importance of the Research Achievements

本研究により、高齢者の健康上の特長としては合併症の増加,polypharmacyが生じやすいことを確認した。高齢者において、SGLT2阻害剤やSuvorexantの大腿骨骨折リスクは懸念するほどの大きいリスクではなかった。また、後期高齢者より60歳代でpolypharmacyのリスクが大きいことがわかった(投稿中)。レセプトデータベースは,傷病名の誤分類バイアス,未測定交絡因子が存在することにより薬剤の正しいリスク評価ができない可能性が高いため、申請者は選択バイアスに着目し,データベースによるリスク評価にバイアス感度分析を組み込んだ手法を提案した.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (5 results)

All 2023 2022

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (3 results)

  • [Journal Article] Association between the Use of Suvorexant and Hip Fracture in Older Adults in Japan Using a Nationwide Administrative Claims Database: A Matched Case Control Study2023

    • Author(s)
      Tomoyuki Saito, Shuko Nojiri, Takatoshi Kasai, Yoshimune Hiratsuka, Muneaki Ishijima & Hiroyuki Daida
    • Journal Title

      Drugs & Aging

      Volume: -

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Impact of sodium-glucose cotransporter-2 inhibitors on the risk of hip fracture in older patients in Japan using a nationwide administrative claims database: A matched case control study2023

    • Author(s)
      Tomoyuki Saito, Shuko Nojiri, Takatoshi Kasai, Yoshimune Hiratsuka, Muneaki Ishijima, Hiroyuki Daida
    • Journal Title

      Geriatrics & Gerontology International

      Volume: - Issue: 6 Pages: 418-425

    • DOI

      10.1111/ggi.14591

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 高齢者におけるスボレキサントと大腿骨骨折の関連 -Case-Control and Case-Crossover design-2022

    • Author(s)
      齋藤智之, 野尻宗子, 葛西隆敏, 平塚義宗, 石島旨章, 代田浩之
    • Organizer
      日本医療薬学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 高齢者におけるSGLT2阻害薬と大腿骨骨折の関連 -症例対照研究-2022

    • Author(s)
      齋藤智之, 野尻宗子, 葛西隆敏, 平塚義宗, 石島旨章, 代田浩之
    • Organizer
      日本くすりと糖尿病学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 高齢者におけるスボレキサントと大腿骨骨折の関連性2022

    • Author(s)
      齋藤智之、野尻宗子、葛西隆敏、平塚義宗、石島旨章、代田浩之
    • Organizer
      第32回日本医療薬学会年会
    • Related Report
      2021 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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