1．研究の目的・方法

This research aims to assess the causal impact of the new 2024 labor law, which limits maximum overtime hours, on gender differences in time allocation and learning outcomes (including test results and specialty preferences) among comparable Japanese medical interns.
We plan to integrate the GMITE test data with its survey data, linking it to hospital surveys and medical school quality measures, and then use regression analysis to examine causality. Although we use existing, pre-planned datasets, the empirical approach is prospective and observational because we follow participants through their first and second years and focus on changes in their learning outcomes from the first to the second year.
Besides utilizing GMITE results, we also intend to include the following variables from JAMEP’s surveys and the Medical Institutional Database from FY2020 to FY2025.

• B004 Establishment Type (National / Public / Private)
• B005 Classification (University-affiliated / Community-based)
• B008 Prefecture
• B009 City / Ward / County
• B012 Residency Matching Participation (Yes / No)
• B013 Number of Residency Slots
• B014 Number of Matched Residents
• B015 Number of Residents in Training
• Total Number of Beds (reported and registered)
• Number of General Beds (by specialty; reported and registered)
• Number of Full-time & Part-time Physicians (reported and registered)
• Number of Nurses (Full-time equivalent count; reported and registered)
• Number of Certified Specialists by Field (Full-time equivalent;
• Residency Slots: Number of PGY-1 residency slots
• Matched Residents: Number of matched PGY-1 residents
• 年齢 Age
• 性別 Gender
• 希望専門科目Intended specialty (multiple)
• 内科ローテート期間 Duration of Internal Medicine rotation
• 外科ローテート期間Duration of Surgery rotation
• 小児科ローテート期間 Duration of Pediatrics rotation
• 産婦人科ローテート期間 Duration of Obstetrics and Gynecology rotation
• 精神科ローテート期間 Duration of Psychiatry rotation
• 救急科のローテート期間（麻酔科のローテート期間を除く）Duration of Emergency Medicine rotation (excluding Anesthesiology rotation; months completed as of today)
• 地域医療ローテート期間Duration of Community Medicine rotation
• 1か月の平均当直回数（救急外来や病棟勤務を含む）Average number of on-call shifts per month (including Emergency Department and inpatient duties)
• 1ヵ月の平均ER当直回数 Average Number of ER On-call Shifts per Month
• 常時の平均入院患者受け持ち人数 Average number of inpatients under your care at any given time
• 1日の平均勉強時間（就業時間内・外に関わらず、座学や実技の自習等、業務以外での技能向上に関する勉強時間） Average study time per day (including both during and outside working hours; self-study for skill development such as reading, lectures, or practical training)
• 就業時間以外における1日の平均勉強時間 “Of the above, average study time per day outside working hours
• 1週間の平均労働時間（⽇当直中の待機時間を含む）”Average working hours per week (including standby hours during day/night on-call shifts)
• 医学部の地域枠や自治医科大学卒業者など、特定の地域と病院等において就業することを都道府県等と契約していますか？Have you entered into a contractual agreement with a prefectural government or other authority to work in a specific region or medical institution (e.g., as a participant in a regional quota program or as a graduate of Jichi Medical University)?

We aim to complete the project within 5 years after receiving the data from JAMEP.

2．研究の対象

Among those who took the GM-ITE between FY2020 and FY2025, individuals who provided informed and voluntary consent for the research use of their test results and questionnaire responses.

3．研究に用いる試料・情報の種類

（情報）GM-ITE test results (FY2020–FY2025); basic information on GM-ITE examinees (residents), such as training year, gender, and intended specialty; data on the affiliated institutions, including hospital classification, hospital size, geographic location, and the presence or absence of a general medicine department; and questionnaire responses.

4．研究に用いる試料・情報の提供を開始する予定日

April 1, 2026

5．研究に用いる試料・情報の提供を行う機関

Specified Nonprofit Corporation Japan Institute for Advancement of Medical Education Program
Chairperson Kiyoshi Kurokawa

6．研究責任者及び研究に用いる試料・情報を利用する者の範囲

Professor, University of Tokyo, Graduate School of Public Policy. Stacey H. CHEN (Principal Investigator)
Professor, Institute of Economic Research, Hitotsubashi University. Emiko Usui
Associate Professor, Department of Economics, Kyushu University. Kiho Muroga
Professor, Division of Medical Education, Juntendo University Graduate School of Medicine. Yuji Nishizaki
Director, Muribushi Project for Okinawa Residency Programs. Yasuharu Tokuda

7．外部への試料・情報の提供

The above data will be anonymized so that no individual can be identified, and the anonymized data files will be provided either via secure internet channels or on electronic media that are accessible only to authorized personnel.

8．試料・情報の管理について責任を有する者の氏名

Professor, University of Tokyo, Graduate School of Public Policy. Stacey H. CHEN

9．試料・情報の利用又は他の研究機関への提供の停止

The data collected in this study will be processed into anonymized data in such a manner that individual participants cannot be identified. Because anonymization is conducted at an early stage of the research process, withdrawal of consent will no longer be possible once consent has been provided and the data have been anonymized. However, participants may request withdrawal of consent within one month from the initiation of this study, provided that such withdrawal is technically feasible.
If a research participant, or their legally authorized representative, does not consent to the use of their information for this study, the individual will not be included as a research subject. In such cases, please download the “Form for Non-Consent to Research Use” from the JAMEP website (https://jamep.or.jp/ic/), complete the required information, and submit the form to the contact address listed below. Refusal to provide consent will not result in any disadvantage to the individual.

10．お問い合わせ先

If you have any questions or inquiries regarding this study, please contact the office listed below. Upon request, and provided that doing so does not compromise the protection of personal information or intellectual property of other research participants, the research protocol and related documents may be made available for review.

Contact point for inquiries and submission of the form for refusal of research use:

Specified Nonprofit Corporation Japan Institute for Advancement of Medical Education Program (JAMEP)
Osaki KI Building 6F, 1-19-10 Osaki, Shinagawa-ku, Tokyo 141-0032, Japan
Tel: +81-3-6431-8191

研究責任者

Professor, University of Tokyo, Graduate School of Public Policy. Stacey H. CHEN