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Frequency and characteristics of frequent emergency department visitors in Japan: multicentered retrospective chart review

Research Project

Project/Area Number 19K21449
Project/Area Number (Other) 18H06368 (2018)
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund (2019)
Single-year Grants (2018)
Review Section 0908:Society medicine, nursing, and related fields
Research InstitutionYokohama City University (2020)
Hamamatsu University School of Medicine (2018-2019)

Principal Investigator

Makoto Kaneko  横浜市立大学, データサイエンス研究科, 講師 (80825076)

Project Period (FY) 2018-08-24 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords頻回救急受診 / 救急医療 / 医療費 / プライマリ・ケア / 頻回救急外来受診 / 入院 / 社会経済的因子
Outline of Research at the Start

頻回に救急外来を受診する方の割合、用いられている医療費及び特徴を調査する研究です。これらを調査することで、避けられる頻回救急外来受診の削減や救急外来で働く医療者の負担軽減に繋がると考えています。

Outline of Final Research Achievements

Although frequent emergency department (ED) use is a global issue, little research has been conducted in a country like Japan where universal health insurance is available. The study aims to document the proportion of ED visits that are by frequent users. The study was a prevalence study for a period of 1 year. We targeted a secondary hospital and a tertiary hospital in central Japan. The participants were all patients who presented to the EDs. We defined frequent ED user as a patient who visited the ED 5 times/year. The main outcome measures were the proportion of frequent ED users among all ED users and the proportion of healthcare expenditures by the frequent ED users among all ED expenditures.
Of 25 231 ED visits over 1 year, 134 frequent ED users accounted for 1043 visits: 0.66% of all ED users, comprised 4.1% of all ED visits, and accounted for 1.9% of total healthcare expenditures.

Academic Significance and Societal Importance of the Research Achievements

今回の調査結果では、諸外国の先行研究に比較して、頻回救急外来受診者の割合や医療費に占める割合の少ないことが分かりました。今後は、この結果が日本の他の地域にも当てはまる傾向なのか、もしそうであればなぜ日本では少ないのかなどの研究に繋げていく予定です。また、海外では患者さん・医療機関双方の負担を減らすために頻回救急外来受診を適切に減らす方法が検討されており、日本でもその様な研究に繋がっていくと考えられます。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Annual Research Report
  • Research Products

    (6 results)

All 2020 2019 Other

All Int'l Joint Research (3 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results)

  • [Int'l Joint Research] ミシガン大学/ラトガース大学(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] ミシガン大学家庭医療学講座(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] University of Michigan/Rutgers University(米国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Differences between frequent emergency department users in a secondary rural hospital and a tertiary suburban hospital in central Japan: a prevalence study.2020

    • Author(s)
      Kaneko M, Inoue M, Okubo M, Furgal AKC, Crabtree BF, Fetters MD
    • Journal Title

      BMJ Open

      Volume: 10 Issue: 9 Pages: e039030-e039030

    • DOI

      10.1136/bmjopen-2020-039030

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 頻回救急外来受診者が受診数及び医療費に占める割合:2施設診療録レビュー研究2020

    • Author(s)
      金子 惇、井上 真智子、大久保 雅史、宜保 光一郎、ベンジャミン・クラブツリー、マイク・D・フェターズ
    • Organizer
      第10回日本プライマリ・ケア連合学会学術大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 頻回救急外来受診者が受診数及び医療費に占める割合:2施設診療録レビュー研究2019

    • Author(s)
      金子 惇、井上 真智子、大久保 雅史、宜保 光一郎、ベンジャミン・クラブツリー、マイク・D・フェターズ
    • Organizer
      日本プライマリ・ケア連合学会学術大会
    • Related Report
      2019 Research-status Report 2018 Annual Research Report

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Published: 2018-08-27   Modified: 2024-03-26  

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