GM-ITE®︎ 研究論文

GM-ITE^®︎ 研究論文

2026

NEW!!

“Gender Differences in Patient Safety Incident Risk Among Early Career Resident Physicians: A Cross-sectional Analysis”

Katagiri, Aomi MD; Kamau-Mitchell, Caroline MD; Kurihara, Masaru MD, PhD; Watari, Takashi MD, MHQS, PhD; Nishizaki, Yuji MD, PhD; Katayama, Kohta MD, PhD; Nagasaki, Kazuya MD, PhD; Kobayashi, Hiroyuki MD, PhD; Mizuno, Atsushi MD; Nakashima, Kei MD; Tokuda, Yasuharu MD, MPH, PhD

Journal of Patient Safety ():10.1097/PTS.0000000000001465, January 23, 2026. | DOI: 10.1097/PTS.0000000000001465

NEW!!

“Association between grit and wellness outcomes among Japanese medical residents: A nationwide cross-sectional study”

Toshinori Nishizawa, Kazuya Nagasaki, Yuji Nishizaki, Nobutoshi Nawa, Yu Akaishi, Takeo Fujiwara, Masanaga Yamawaki, Taro Shimizu, Yu Yamamoto, Kiyoshi Shikino, Hiroyuki Kobayashi, Yasuharu Tokuda

Medical Teacher, 1–11. https://doi.org/10.1080/0142159X.2026.2618503

NEW!!

“Gender differences in burnout among resident physicians in Japan: a nationwide cross-sectional study”

Kazuya Nagasaki, Yuka Kawase, Yuji Nishizaki, Taro Shimizu, Yu Yamamoto, Kiyoshi Shikino, Takashi Watari, Hiroyuki Kobayashi, Yasuharu Tokuda

Academic Medicine, 2025;, wvaf096, https://doi.org/10.1093/acamed/wvaf096

2025

“Clinical Competence and Attitudes Towards LGBT Patients Among Medical Residents in Japan”

Kazuya Nagasaki, Yuji Nishizaki, Taro Shimizu, Yu Yamamoto, Kiyoshi Shikino, Takashi Watari, Miwa Sekine, Hiroyuki Kobayashi, Yasuharu Tokuda

BMC Med Educ 26, 187 (2026). https://doi.org/10.1186/s12909-025-08510-y

“Time-at-bedside and competency acquisition: a secondary analysis of GM-ITE domain scores in Japanese resident physicians”

Kohta Katayama, Toshihiko Takada, Yuji Nishizaki, Kazuya Nagasaki, Taro Shimizu, Yu Yamamoto, Takashi Watari, Yasuharu Tokuda, Vineet Chopra, Yoshiyuki Ohira

BMC Med Educ 25, 1537 (2025). https://doi.org/10.1186/s12909-025-08076-9

“Supervising physicians’ perceptions on physician work-hour regulations in Japan: a nationwide cross-sectional study”

Hirohisa Fujikawa, Hidetaka Tamune, Yuji Nishizaki, Kiyoshi Shikino, Taro Shimizu, Yu Yamamoto, Miwa Sekine, Kazuya Nagasaki, Hiroyuki Kobayashi, Yasuharu Tokuda

BMC Med Educ 25, 1489 (2025). https://doi.org/10.1186/s12909-025-08023-8

“Optimal Working Hours in the 2024 Physician Work Reform: Insights from a Residency Program Director”

Shikino K, Nishizaki Y, Kataoka K, Nagasaki K, Kobayashi H, Shimizu T, Tokuda Y.

Adv Med Educ Pract. 2025 Aug 20;16:1461-1468. doi: 10.2147/AMEP.S540698. PMID: 40861024; PMCID: PMC12375352.

“Sexual Harassment Experiences and Reporting Among Medical Students During Clinical Clerkships in Japan: A Nationwide Cross-Sectional Survey”

Morika Suzuki, Takashi Watari, Yuji Nishizaki, Miwa Sekine, Yasuharu Tokuda

Journal of Hospital Medicine. Abstract published at SHM Converge 2025. Abstract 0074

“Association between residents’ work hours and patient care ownership: a nationwide cross-sectional study in Japan”

Hirohisa Fujikawa, Hidetaka Tamune, Yuji Nishizaki, Kazuya Nagasaki, Hiroyuki Kobayashi, Masanori Nojima, Miwa Sekine, Taro Shimizu, Yu Yamamoto, Kiyoshi Shikino, Yasuharu Tokuda

BMC Med Educ 25, 385 (2025). https://doi.org/10.1186/s12909-025-06941-1

“Resident Encounters with Disruptive Workplace Behaviours in Japan: Findings from a National Cross-Sectional Study”

Watari T, Sheffield V, Gupta A, Taniguchi K, Tokuda Y, Nishizaki Y.

BMJ Open Quality. 2025;14:e003093. https://doi.org/10.1136/bmjoq-2024-003093

“Resident Physician Recognition of Tachypnea in Clinical Simulation Videos in Japan: Cross-Sectional Study”

Kiyoshi Shikino, Yuji Nishizaki, Sho Fukui, Koshi Kataoka, Daiki Yokokawa, Taro Shimizu, Yu Yamamoto, Kazuya Nagasaki, Hiroyuki Kobayashi, Yasuharu Tokuda

JMIR Med Educ 2025;11:e72640. doi: 10.2196/72640

“Educational environment changes toward resident duty hour restrictions in Japan”

Kazuya Nagasaki, Yuji Nishizaki, Taro Shimizu, Yu Yamamoto, Kiyoshi Shikino, Koshi Kataoka, Hiroyuki Kobayashi, Yasuharu Tokuda

Sci Rep 15, 16925 (2025). https://doi.org/10.1038/s41598-025-00347-1

2024

“Residency Program Directors’ Perspectives on Overtime Duty Hours and Professional Development Time in Japan”

Kiyoshi Shikino, Yuji Nishizaki, Kazuya Nagasaki, Hiroyuki Kobayashi, Koshi Kataoka, Taro Shimizu, Yasuharu Tokuda

Adv Med Educ Pract. 2024;15:1185-1194 https://doi.org/10.2147/AMEP.S497272

“A novel resident physician examination using clinical simulation video to assess clinical competence in Japan: a cross-sectional study”

Kiyoshi Shikino, Yuji Nishizaki, Koshi Kataoka, Sho Fukui, Daiki Yokokawa, Taro Shimizu, Yu Yamamoto, Kazuya Nagasaki, Hiroyuki Kobayashi & Yasuharu Tokuda

BMC Med Educ 24, 1402 (2024). https://doi.org/10.1186/s12909-024-06395-x

“Association between physicians’ maldistribution and core clinical competency of resident physicians: a nationwide cross-sectional study”

Kiyoshi Shikino, Yuji Nishizaki, Koshi Kataoka, Masanori Nojima, Taro Shimizu, Yu Yamamoto, Sho Fukui, Kazuya Nagasaki, Daiki Yokokawa, Hiroyuki Kobayashi, Yasuharu Tokuda

BMJ Open 2024;14:e083184. doi: 10.1136/bmjopen-2023-083184

“Experience of caring for patients with COVID-19 and educational achievement among Japanese resident physicians: a nationwide survey with general medicine in-training examination”

Sho Nishiguchi, Yuji Nishizaki, Miki Hamaguchi, Atsushi Goto, Masahiko Inamori, Kiyoshi Shikino, Tomohiro Shinozaki, Koshi Kataoka, Taro Shimizu, Yu Yamamoto, Sho Fukui, Hiroyuki Kobayashi and Yasuharu Tokuda

BMC Med Educ 24, 1125 (2024). https://doi.org/10.1186/s12909-024-06085-8

“Evaluation of a Computer-Based Morphological Analysis Method for Free-Text Responses in the General Medicine In-Training Examination: Algorithm Validation Study”

Daiki Yokokawa; Kiyoshi Shikino; Yuji Nishizaki; Sho Fukui; Yasuharu Tokuda

JMIR Med Educ 2024;10:e52068. doi: 10.2196/52068

“The Utility of Wearable Cameras in Developing Examination Questions and Answers on Physical Examinations: Preliminary Study”

Sho Fukui; Taro Shimizu; Yuji Nishizaki; Kiyoshi Shikino; Yu Yamamoto; Hiroyuki Kobayashi; Yasuharu Tokuda

JMIR Med Educ 2024;10:e53193. doi: 10.2196/53193

“Infectious Disease Physician Availability and Postgraduate Antimicrobial Stewardship Education in Japan”

Toshiki Miwa, MD; Koh Okamoto, MD, MS, PhD; Yuji Nishizaki, MD, MPH, PhD; Yasuharu Tokuda, MD, MPH, PhD

JAMA Netw Open. 2024 Mar 4;7(3):e244781. doi: 10.1001/jamanetworkopen.2024.4781.

“Distribution of internal medicine rotations among resident physicians in Japan: a nationwide, multicenter, cross-sectional study”

Kiyoshi Shikino, Miwa Sekine, Yuji Nishizaki, Yu Yamamoto, Taro Shimizu, Sho Fukui, Kazuya Nagasaki, Daiki Yokokawa, Takashi Watari, Hiroyuki Kobayashi & Yasuharu Tokuda

BMC Medical Education volume 24, Article number: 316 (2024) doi: 10.1186/s12909-023-04429-4.

“Development of a Clinical Simulation Video to Evaluate Multiple Domains of Clinical Competence: Cross-Sectional Study”

Kiyoshi Shikino, MD, MHPE, PhD; Yuji Nishizaki, MD, MPH, PhD; Sho Fukui, MD, MPH; Daiki Yokokawa,
MD, PhD; Yu Yamamoto, MD; Hiroyuki Kobayashi, MD, PhD; Taro Shimizu, MD, MPH, PhD; Yasuharu Tokuda,MD, MPH, PhD

JMIR Med Educ. 2024 Feb 29:10:e54401. doi: 10.2196/54401.

“Association of sleep quality with duty hours mental health and medical errors among Japanese postgraduate residents: a cross-sectional study”

Kazuya Nagasaki, Hiroyuki Kobayashi, Yuji Nishizaki, Masaru Kurihara, Takashi Watari, Taro Shimizu, Yu Yamamoto, Kiyoshi Shikino, Sho Fukui, Sho Nishiguchi, Kohta Katayama & Yasuharu Tokuda

Sci Rep. 2024 Jan 17;14(1):1481. doi: 10.1038/s41598-024-51353-8.

2023

“Performance Comparison of ChatGPT-4 and Japanese Medical Residents in the General Medicine In-Training Examination: Comparison Study”

Takashi Watari, MHQS, MD, PhD; Soshi Takagi, BA; Kota Sakaguchi, MBA, MD; Yuji Nishizaki, MPH, MD, PhD; Taro Shimizu, MPH, MBA, MD, PhD; Yu Yamamoto, MD; Yasuharu Tokuda, MPH, MD

JMIR Med Educ. 2023 Dec 6:9:e52202. doi: 10.2196/52202.

“Empathy competence and future specialty among medical residents in Japan: a nationwide cross‑sectional study”

Takashi Watari, Nathan Houchens, Yuji Nishizaki, Koshi Kataoka, Tomoe Otsuka, Yasuhisa Nakano, Kota Sakaguchi, Yoshihiko Shiraishi, Kohta Katayama, Hitomi Kataoka & Yasuharu Tokuda

Sci Rep . 2023 Aug 23;13(1):13742. doi: 10.1038/s41598-023-41011-w.

“Association between regional quota program in medical schools and practical clinical competency based on General Medicine In-Training Examination score: a nationwide cross-sectional study of resident physicians in Japan”

Sho Fukui, Kiyoshi Shikino, Yuji Nishizaki, Taro Shimizu, Yu Yamamoto, Hiroyuki Kobayashi, Yasuharu Tokuda

Postgrad Med J . 2023 Oct 19;99(1177):1197-1204. doi: 10.1093/postmj/qgad059.

“Medical resident’s pursuing specialty and differences in clinical proficiency among medical residents in Japan: a nationwide cross‑sectional study”

Takashi Watari, Yuji Nishizaki, Nathan Houchens, Koshi Kataoka, Kota Sakaguchi, Yoshihiko Shiraishi, Taro Shimizu, Yu Yamamoto and Yasuharu Tokuda

BMC Med Educ. 2023 Jun 22;23(1):464. doi: 10.1186/s12909-023-04429-4.

“The effects of resident work hours on well-being, performance, and education: A review from a Japanese perspective”

Kazuya Nagasaki MD, PhD., Hiroyuki Kobayashi MD, PhD.

J Gen Fam Med. 2023 Sep 21;24(6):323-331. doi: 10.1002/jgf2.649. eCollection 2023 Nov.

“Relationship between COVID-19 care and burnout among postgraduate clinical residents in Japan: a nationwide cross-sectional study”

Yuji Nishizaki, Kazuya Nagasaki, Kiyoshi Shikino, Masaru Kurihara, Tomohiro Shinozaki, Koshi Kataoka, Taro Shimizu, Yu Yamamoto, Sho Fukui, Sho Nishiguchi, Kohta Katayama, Hiroyuki Kobayashi, Yasuharu Tokuda

BMJ Open 2023;13:e066348. doi:10.1136/bmjopen-2022-066348

2022

“Impact of duty hours on competency-related knowledge acquisition among community hospital residents”

Kazuya Nagasaki, Yuji Nishizaki, Chisato Hachisuka, Tomohiro Shinozaki, Taro Shimizu, Yu Yamamoto, Kiyoshi Shikino, Sho Fukui, Sho Nishiguchi, Kohta Katayama, Masaru Kurihara, Hiroyuki Kobayashi, Yasuharu Tokuda

J Gen Fam Med. 2023;24:87–93. 23 October 2022. DOI: 10.1002/jgf2.594

“Association between mental health and duty hours of postgraduate residents in Japan: a nationwide cross‑sectional study”

Kazuya Nagasaki, Yuji Nishizaki, Tomohiro Shinozaki, Taro Shimizu, Yu Yamamoto, Kiyoshi Shikino, Sho Fukui, Sho Nishiguchi, Masaru Kurihara, Koshi Kataoka, Yasuharu Tokuda, Hiroyuki Kobayashi

Scientifi c Reports. 2022 Jun 23;12(1):10626. doi: 10.1038/s41598-022-14952-x.

2021

“The impact of autopsy participation on clinical residency”

Kohta Katayama, Yuji Nishizaki, Tomohiro Shinozaki, Yuta Saitoh, Tetsuhiro Yano, Takuya Aoki, Masayuki Noguchi, Yasuharu Tokuda

J Gen Fam Med. 2021 May 3;22(5):278-287. doi: 10.1002/jgf2.449.

“Impact of the resident duty hours on in-training examination score: A nationwide study in Japan”

Kazuya Nagasaki, Yuji Nishizaki, Tomohiro Shinozaki, Hiroyuki Kobayashi, Taro Shimizu, Tomoya Okubo, Yu Yamamoto, Ryota Konishi, Yasuharu Tokuda

Medical Teacher. 24 Nov 2021. DOI: 10.1080/0142159X.2021.2003764

“Validation of the General Medicine in-Training Examination Using the Professional and Linguistic Assessments Board Examination Among Postgraduate Residents in Japan”

Kazuya Nagasaki, Yuji Nishizaki, Masanori Nojima, Taro Shimizu, Ryota Konishi, Tomoya Okubo, Yu Yamamoto, Ryo Morishima, Hiroyuki Kobayashi, Yasuharu Tokuda

International Journal of General Medicine 2021:14. https://doi.org/10.2147/IJGM.S331173

“Difference in the general medicine in-training examination score between community-based hospitals and university hospitals: a cross-sectional study based on 15,188 Japanese resident physicians”

Yuji Nishizaki, Keigo Nozawa, Tomohiro Shinozaki, Taro Shimizu, Tomoya Okubo, Yu Yamamoto, Ryota Konishi, Yasuharu Tokuda

BMC Medical Education (2021) 21:214. https://doi.org/10.1186/s12909-021-02649-0

“Association Between Resident Duty Hours and Self-study Time Among Postgraduate Medical Residents in Japan”

Kazuya Nagasaki, Yuji Nishizaki, Tomohiro Shinozaki, Hiroyuki Kobayashi, Yasuharu Tokuda

JAMA Network Open. 2021;4(3):e210782. doi:10.1001/jamanetworkopen.2021.0782 (Mar 5, 2021)

2020

“Impact of general medicine rotation training on the in-training examination scores of 11,244 Japanese resident physicians: a Nationwide multi-center cross-sectional study”

Yuji Nishizaki, Taro Shimizu, Tomohiro Shinozaki, Tomoya Okubo, Yu Yamamoto, Ryota Konishi, Yasuharu Tokuda

BMC Medical Education volume 20, Article number: 426 (2020)

2018

“Postgraduate medical education in Japan: Missed opportunity for learning clinical reasoning”

Yasuharu Tokuda, Mano Soshi, Tomoya Okubo, Yuji Nishizaki

J Gen Fam Med. 2018 Sep; 19(5): 152–153.

2017

“Awareness of Diagnostic Error among Japanese Residents: a Nationwide Study”

Nishizaki Y, Shinozaki T, Kinoshita K, Shimizu T, Tokuda Y

J Gen Intern Med. 2017 Dec 18.

“Educational environment and the improvement in the General Medicine In-training Examination score”

Nishizaki Y, Mizuno A, Shinozaki T, Okubo T, Tsugawa Y, Shimizu T, Konishi R, Yamamoto Y, Yanagisawa N, Shiojiri T, Tokuda Y

J Gen Fam Med. 2017 Apr 13;18(5):312-314

2016

“The Impact of the Hospital Volume on the Performance of Residents on the General Medicine In-Training Examination: A Multicenter Study in Japan”

Atsushi Mizuno, Yusuke Tsugawa, Taro Shimizu, Yuji Nishizaki, Tomoya Okubo, Yusuke Tanoue, Ryota Konishi, Toshiaki Shiojiri, Yasuharu Tokuda

Intern Med 55: 1553-1558, 2016

2015

“Impact of inpatient caseload, emergency department duties, and online learning resource on General Medicine In-Training Examination scores in Japan”

Kensuke Kinoshita, Yusuke Tsugawa, Taro Shimizu, Yusuke Tanoue, Ryota Konishi, Yuji Nishizaki, Toshiaki Shiojiri, Yasuharu Tokuda

International Journal of General Medicine 2015:8 355-360

“Challenging cases of professionalism in Japan: improvement in understanding of professional behaviors among Japanese residents between 2005 and 2013”

Kensuke Kinoshita, Yusuke Tsugawa, Peter B Barnett, Yasuharu Tokuda

BMC Medical Education (2015)15:42

2013

“The hospital educational environment and performance of residents in the General Medicine In-Training Examination: a multicenter study in Japan”

Taro Shimizu, Yusuke Tsugawa, Yusuke Tanoue, Ryota Konishi, Yuji Nishizaki, Mitsumasa Kishimoto, Toshiaki Shiojiri, Yasuharu Tokuda

International Journal of General Medicine 2013:6 637-640