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Kataoka K, Nishizaki Y, Shimizu T, Yamamoto Y, Shikino K, Nojima M, Nagasaki K, Fukui S, Nishiguchi S, Katayama K, Kurihara M, Ueda R, Kobayashi H, Tokuda Y. Hospital Use of a Web-Based Clinical Knowledge Support System and In-Training Examination Performance Among Postgraduate Resident Physicians in Japan: Nationwide Observational Study. JMIR MEDICAL EDUCATION 2024; 10:e52207. [PMID: 38825848 PMCID: PMC11154652 DOI: 10.2196/52207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 05/02/2024] [Accepted: 05/02/2024] [Indexed: 06/04/2024]
Abstract
Background The relationship between educational outcomes and the use of web-based clinical knowledge support systems in teaching hospitals remains unknown in Japan. A previous study on this topic could have been affected by recall bias because of the use of a self-reported questionnaire. Objective We aimed to explore the relationship between the use of the Wolters Kluwer UpToDate clinical knowledge support system in teaching hospitals and residents' General Medicine In-Training Examination (GM-ITE) scores. In this study, we objectively evaluated the relationship between the total number of UpToDate hospital use logs and the GM-ITE scores. Methods This nationwide cross-sectional study included postgraduate year-1 and -2 residents who had taken the examination in the 2020 academic year. Hospital-level information was obtained from published web pages, and UpToDate hospital use logs were provided by Wolters Kluwer. We evaluated the relationship between the total number of UpToDate hospital use logs and residents' GM-ITE scores. We analyzed 215 teaching hospitals with at least 5 GM-ITE examinees and hospital use logs from 2017 to 2019. Results The study population consisted of 3013 residents from 215 teaching hospitals with at least 5 GM-ITE examinees and web-based resource use log data from 2017 to 2019. High-use hospital residents had significantly higher GM-ITE scores than low-use hospital residents (mean 26.9, SD 2.0 vs mean 26.2, SD 2.3; P=.009; Cohen d=0.35, 95% CI 0.08-0.62). The GM-ITE scores were significantly correlated with the total number of hospital use logs (Pearson r=0.28; P<.001). The multilevel analysis revealed a positive association between the total number of logs divided by the number of hospital physicians and the GM-ITE scores (estimated coefficient=0.36, 95% CI 0.14-0.59; P=.001). Conclusions The findings suggest that the development of residents' clinical reasoning abilities through UpToDate is associated with high GM-ITE scores. Thus, higher use of UpToDate may lead physicians and residents in high-use hospitals to increase the implementation of evidence-based medicine, leading to high educational outcomes.
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Affiliation(s)
- Koshi Kataoka
- Division of Medical Education, Juntendo University School of Medicine, Tokyo, Japan
| | - Yuji Nishizaki
- Division of Medical Education, Juntendo University School of Medicine, Tokyo, Japan
| | - Taro Shimizu
- Department of Diagnostic and Generalist Medicine, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Yu Yamamoto
- Division of General Medicine, Center for Community Medicine, Jichi Medical University, Tochigi, Japan
| | - Kiyoshi Shikino
- Department of Community-Oriented Medical Education, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Masanori Nojima
- Center for Translational Research, The Institute of Medical Science Hospital, The University of Tokyo, Tokyo, Japan
| | - Kazuya Nagasaki
- Department of Internal Medicine, Mito Kyodo General Hospital, University of Tsukuba, Ibaraki, Japan
| | - Sho Fukui
- Department of Emergency and General Medicine, Kyorin University, Tokyo, Japan
| | - Sho Nishiguchi
- Department of General Internal Medicine, Shonan Kamakura General Hospital, Kanagawa, Japan
| | - Kohta Katayama
- Division of General Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
- Department of Clinical Epidemiology, Graduate School of Medicine, Fukushima Medical University, Fukushima, Japan
| | - Masaru Kurihara
- Department of Patient Safety, Nagoya University Hospital, Nagoya, Japan
| | - Rieko Ueda
- Medical Technology Innovation Center, Juntendo University, Tokyo, Japan
| | - Hiroyuki Kobayashi
- Department of Internal Medicine, Mito Kyodo General Hospital, University of Tsukuba, Ibaraki, Japan
| | - Yasuharu Tokuda
- Muribushi Okinawa Center for Teaching Hospitals, Okinawa, Japan
- Tokyo Foundation for Policy Research, Tokyo, Japan
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Nagasaki K, Kobayashi H. The effects of resident work hours on well-being, performance, and education: A review from a Japanese perspective. J Gen Fam Med 2023; 24:323-331. [PMID: 38025934 PMCID: PMC10646297 DOI: 10.1002/jgf2.649] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 06/20/2023] [Accepted: 08/31/2023] [Indexed: 12/01/2023] Open
Abstract
This article examines the impact of working-hour restrictions on the well-being, performance, and education of medical residents in Japan. Despite Japan's plan to introduce new regulations for resident working hours by 2024, there is still an ongoing debate regarding their appropriateness. This review provides a comprehensive overview of the current regulations of resident working hours worldwide, with a specific focus on weekly hours. The varying regulations are highlighted, including the 80-hour-per-week regulation in the United States and the 48-h-per-week regulation in the European Union influencing other regions. The article also discusses the effectiveness of working-hour restrictions on residents' mental health, with shorter working hours having potentially greater benefits. However, the impacts on medical safety and resident education are mixed, and further reduction in working hours must be carefully considered to avoid adverse effects. The planned changes to working-hour limits for residents in Japan offer a unique opportunity to gain new evidence on the impact of such regulations, which will be of interest to policymakers and researchers worldwide.
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Affiliation(s)
- Kazuya Nagasaki
- Department of Internal Medicine, Mito Kyodo General HospitalUniversity of TsukubaIbarakiJapan
| | - Hiroyuki Kobayashi
- Department of Internal Medicine, Mito Kyodo General HospitalUniversity of TsukubaIbarakiJapan
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Fukui S, Shikino K, Nishizaki Y, Shimizu T, Yamamoto Y, Kobayashi H, Tokuda Y. 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. Postgrad Med J 2023; 99:1197-1204. [PMID: 37474744 DOI: 10.1093/postmj/qgad059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/27/2023] [Accepted: 06/22/2023] [Indexed: 07/22/2023]
Abstract
PURPOSE A regional quota program (RQP) was introduced in Japan to ameliorate the urban-rural imbalance of physicians. Despite concerns about the low learning abilities of RQP graduates, the relationship between the RQP and practical clinical competency after initiating clinical residency has not been evaluated. METHODS We conducted a nationwide cross-sectional study to assess the association between the RQP and practical clinical competency based on General Medicine In-Training Examination (GM-ITE) scores. We compared the overall and category GM-ITE results between RQP graduates and other resident physicians. The relationship between the RQP and scores was examined using multilevel linear regression analysis. RESULTS There were 4978 other resident physicians and 1119 RQP graduates out of 6097 participants from 593 training hospitals. Being younger; preferring internal, general, or emergency medicine; managing fewer inpatients; and having fewer ER shifts were all characteristics of RQP graduates. In multilevel multivariable linear regression analysis, there was no significant association between RQP graduates and total GM-ITE scores (coefficient: 0.26; 95% confidence interval: -0.09, 0.61; P = .15). The associations of RQP graduates with GM-ITE scores in each category and specialty were not clinically relevant. However, in the same multivariable model, the analysis did reveal that total GM-ITE scores demonstrated strong positive associations with younger age and GM preference, both of which were significantly common in RQP graduates. CONCLUSION Practical clinical competency evaluated based on the GM-ITE score showed no clinically relevant differences between RQP graduates and other resident physicians. Key messages What is already known on this topic Many countries offer unique admission processes to medical schools and special undergraduate programs to increase the supply of physicians in rural areas. Concerns have been raised about the motivation, learning capabilities, and academic performance of the program graduates. What this study adds This nationwide cross-sectional study in Japan revealed clinical competency based on the scores from the General Medicine In-Training Examination showed no clinically relevant differences between graduates of regional quota programs and other resident physicians. How this study might affect research, practice, or policy The study provides evidence to support the Japanese regional quota program from the perspective of clinical competency after initiating clinical practice.
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Affiliation(s)
- Sho Fukui
- Department of Emergency and General Medicine, Kyorin University, Tokyo, 181-8611, Japan
- Immuno-Rheumatology Center, St. Luke's International Hospital, Tokyo, 104-8560, Japan
- Division of Rheumatology, Brigham and Women's Hospital, Boston, MA, 02115, United States
| | - Kiyoshi Shikino
- Department of General Medicine, Chiba University Hospital, Chiba, 260-0856, Japan
- Department of Community-Oriented Medical Education, Chiba University School of Medicine, Chiba, 260-0856, Japan
| | - Yuji Nishizaki
- Division of Medical Education, Juntendo University School of Medicine, Tokyo, 113-8421, Japan
| | - Taro Shimizu
- Department of Diagnostic and Generalist Medicine, Dokkyo Medical University Hospital, Tochigi, 321-0293, Japan
| | - Yu Yamamoto
- Division of General Medicine, Center for Community Medicine, Jichi Medical University, Tochigi, 329-0498, Japan
| | - Hiroyuki Kobayashi
- Department of Internal Medicine, Mito Kyodo General Hospital, University of Tsukuba, Ibaraki, 310-0015, Japan
| | - Yasuharu Tokuda
- Muribushi Okinawa Center for Teaching Hospitals, Okinawa, 901-2132, Japan
- Tokyo Foundation for Policy Research, Tokyo, 106-0032, Japan
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Nagasaki K, Nishizaki Y, Shinozaki T, Shimizu T, Yamamoto Y, Shikino K, Fukui S, Nishiguchi S, Kurihara M, Katayama K, Kobayashi H, Tokuda Y. Association between prolonged weekly duty hours and self-study time among residents: a cross-sectional study. Postgrad Med J 2023; 99:1080-1087. [PMID: 37265446 DOI: 10.1093/postmj/qgad044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/26/2023] [Accepted: 05/06/2023] [Indexed: 06/03/2023]
Abstract
PURPOSE In 2024, the Japanese government will enforce a maximum 80-hour weekly duty hours (DHs) regulation for medical residents. Although this reduction in weekly DHs could increase the self-study time (SST) of these residents, the relationship between these two variables remains unclear. The aim of the study was to investigate the relationship between the SST and DHs of residents in Japan. METHODS In this nationwide cross-sectional study, the subjects were candidates of the General Medicine In-Training Examination in the 2020 academic year. We administered questionnaires and categorically asked questions regarding daily SST and weekly DHs during the training period. To account for hospital variability, proportional odds regression models with generalized estimating equations were used to analyse the association between SST and DHs. RESULTS Of the surveyed 6117 residents, 32.0% were female, 49.1% were postgraduate year-1 residents, 83.8% were affiliated with community hospitals, and 19.9% worked for ≥80 hours/week. Multivariable analysis revealed that residents working ≥80 hours/week spent more time on self-study than those working 60-70 hours/week. Conversely, residents who worked <50 hours/week spent less time on self-study than those who worked 60-70 hours/week. The factors associated with longer SST were sex, postgraduate year, career aspiration for internal medicine, affiliation with community hospitals, academic involvement, and well-being. CONCLUSION Residents with long DHs had longer SSTs than residents with short DHs. Future DH restrictions may not increase but rather decrease resident SST. Effective measures to encourage self-study are required, as DH restrictions may shorten SST.
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Affiliation(s)
- Kazuya Nagasaki
- Department of Internal Medicine, Mito Kyodo General Hospital, University of Tsukuba, Ibaraki 310-0015, Japan
| | - Yuji Nishizaki
- Division of Medical Education, Juntendo University School of Medicine, Tokyo, 113-8421, Japan
| | - Tomohiro Shinozaki
- Department of Information and Computer Technology, Faculty of Engineering, Tokyo University of Science, Tokyo, Japan
| | - Taro Shimizu
- Department of Diagnostic and Generalist Medicine, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Yu Yamamoto
- Division of General Medicine, Center for Community Medicine, Jichi Medical University, Tochigi, Japan
| | - Kiyoshi Shikino
- Department of General Medicine, Chiba University Hospital, Chiba, Japan
| | - Sho Fukui
- Department of Emergency and General Medicine, Kyorin University, Tokyo, Japan
| | - Sho Nishiguchi
- Department of General Internal Medicine, Shonan Kamakura General Hospital, Kamakura, Japan
| | - Masaru Kurihara
- Department of Patient Safety, Nagoya University Hospital, Nagoya, Japan
| | - Kohta Katayama
- Department of General Internal Medicine, St. Marianna University School of Medicine, Tokyo, Japan
- Department of Clinical Epidemiology, Graduate School of Medicine, Fukushima Medical University, Fukushima, Japan
| | - Hiroyuki Kobayashi
- Department of Internal Medicine, Mito Kyodo General Hospital, University of Tsukuba, Ibaraki 310-0015, Japan
| | - Yasuharu Tokuda
- Muribushi Okinawa Center for Teaching Hospitals, Okinawa, Japan
- Tokyo Foundation for Policy Research, Tokyo, Japan
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Watari T, Nishizaki Y, Houchens N, Kataoka K, Sakaguchi K, Shiraishi Y, Shimizu T, Yamamoto Y, Tokuda Y. Medical resident's pursuing specialty and differences in clinical proficiency among medical residents in Japan: a nationwide cross-sectional study. BMC MEDICAL EDUCATION 2023; 23:464. [PMID: 37349724 DOI: 10.1186/s12909-023-04429-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 06/06/2023] [Indexed: 06/24/2023]
Abstract
IMPORTANCE Standardized examinations assess both learners and training programs within the medical training system in Japan. However, it is unknown if there is an association between clinical proficiency as assessed by the General Medicine In-Training Examination (GM-ITE) and pursuing specialty. OBJECTIVE To determine the relative achievement of fundamental skills as assessed by the standardized GM-ITE based on pursuing career specialty among residents in the Japanese training system. DESIGN Nationwide cross-sectional study. SETTING Medical residents in Japan who attempted the GM-ITE in their first or second year were surveyed. PARTICIPANTS A total of 4,363 postgraduate years 1 and 2 residents who completed the GM-ITE were surveyed between January 18 and March 31, 2021. MAIN MEASURES GM-ITE total scores and individual scores in each of four domains assessing clinical knowledge: 1) medical interview and professionalism, 2) symptomatology and clinical reasoning, 3) physical examination and treatment, and 4) detailed disease knowledge. RESULTS When compared to the most pursued specialty, internal medicine, only those residents who chose general medicine achieved higher GM-ITE scores (coefficient 1.38, 95% CI 0.08 to 2.68, p = 0.038). Conversely, the nine specialties and "Other/Not decided" groups scored significantly lower. Higher scores were noted among residents entering general medicine, emergency medicine, and internal medicine and among those who trained in community hospitals with higher numbers of beds, were more advanced in their training, spent more time working and studying, and cared for a moderate but not an extreme number of patients at a time. CONCLUSIONS Levels of basic skill achievement differed depending on respective chosen future specialties among residents in Japan. Scores were higher among those pursuing careers in general medical fields and lower among those pursuing highly specialized careers. Residents in training programs devoid of specialty-specific competition may not possess the same motivations as those in competitive systems.
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Affiliation(s)
- Takashi Watari
- General Medicine Center, Shimane University Hospital, 89-1, Enya-Cho, Izumo Shi, Shimane, 693-8501, Japan.
- Medicine Service, VA Ann Arbor Healthcare System, Ann Arbor, MI, USA.
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.
| | - Yuji Nishizaki
- Division of Medical Education, Juntendo University School of Medicine, Tokyo, Japan
| | - Nathan Houchens
- Medicine Service, VA Ann Arbor Healthcare System, Ann Arbor, MI, USA
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Koshi Kataoka
- Division of Medical Education, Juntendo University School of Medicine, Tokyo, Japan
| | - Kota Sakaguchi
- General Medicine Center, Shimane University Hospital, 89-1, Enya-Cho, Izumo Shi, Shimane, 693-8501, Japan
| | - Yoshihiko Shiraishi
- General Medicine Center, Shimane University Hospital, 89-1, Enya-Cho, Izumo Shi, Shimane, 693-8501, Japan
| | - Taro Shimizu
- Department of Diagnostic and Generalist Medicine, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Yu Yamamoto
- Division of General Medicine, Center for Community Medicine, Jichi Medical University, Tochigi, Japan
| | - Yasuharu Tokuda
- Muribushi Okinawa Project for Teaching Hospitals, Okinawa, Japan
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Fujikawa H, Son D, Aoki T, Eto M. Association between patient care ownership and personal or environmental factors among medical trainees: a multicenter cross-sectional study. BMC MEDICAL EDUCATION 2022; 22:666. [PMID: 36076223 PMCID: PMC9461127 DOI: 10.1186/s12909-022-03730-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 08/31/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Patient care ownership (PCO) is crucial to enhancing accountability, clinical skills, and medical care quality among medical trainees. Despite its relevance, there is limited information on the association of personal or environmental factors with PCO, and thus, authors aimed to explore this association. METHODS In 2021, the authors conducted a multicentered cross-sectional study in 25 hospitals across Japan. PCO was assessed by using the Japanese version of the PCO Scale (J-PCOS). To examine the association between personal (level of training, gender, and department) or environmental factors (hospital size, hospital type, medical care system, number of team members, number of patients receiving care, mean working hours per week, number of off-hour calls per month, and perceived level of the workplace as a learning environment) and PCO after adjusting for clustering within hospitals, the authors employed a linear mixed-effects model. RESULTS The analysis included 401 trainees. After adjusting for clustering within hospitals, it was confirmed that the senior residents had significantly better J-PCOS total scores (adjusted mean difference: 8.64, 95% confidence interval [CI]: 6.18-11.09) than the junior residents and the perceived level of the workplace as a learning environment had a positive association with J-PCOS total scores (adjusted mean difference per point on a global rating of 0-10 points: 1.39, 95% CI: 0.88-1.90). Trainees who received calls after duty hours had significantly higher J-PCOS total scores than those who did not (adjusted mean difference: 2.51, 95% CI: 0.17-4.85). There was no clear trend in the association between working hours and PCO. CONCLUSIONS Seniority and the perceived level of the workplace as a learning environment are associated with PCO. An approach that establishes a supportive learning environment and offers trainees a reasonable amount of autonomy may be beneficial in fostering PCO among trainees. The study findings will serve as a useful reference for designing an effective postgraduate clinical training program for PCO development.
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Affiliation(s)
- Hirohisa Fujikawa
- Department of Medical Education Studies, International Research Center for Medical Education, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
| | - Daisuke Son
- Department of Medical Education Studies, International Research Center for Medical Education, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
- Department of Community-Based Family Medicine, Faculty of Medicine, Tottori University, Yonago, Tottori, Japan
| | - Takuya Aoki
- Division of Clinical Epidemiology, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
- Section of Clinical Epidemiology, Department of Community Medicine, Graduate School of Medicine, Kyoto University, Sakyo-ku, Kyoto, Japan
| | - Masato Eto
- Department of Medical Education Studies, International Research Center for Medical Education, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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Nagasaki K, Nishizaki Y, Shinozaki T, Shimizu T, Yamamoto Y, Shikino K, Fukui S, Nishiguchi S, Kurihara M, Kataoka K, Tokuda Y, Kobayashi H. Association between mental health and duty hours of postgraduate residents in Japan: a nationwide cross-sectional study. Sci Rep 2022; 12:10626. [PMID: 35739229 PMCID: PMC9218701 DOI: 10.1038/s41598-022-14952-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 06/15/2022] [Indexed: 11/11/2022] Open
Abstract
The new duty hour (DH) limit for doctors in Japan will begin in 2024, setting the maximum DHs for postgraduate residents at approximately 80 h weekly. To set appropriate limits, understanding the association between DHs and psychological health is necessary. Thus, we assessed the relationship between residents' psychological health and DHs. We conducted a cross-sectional study involving examinees of the General Medicine In-training Examination 2020. Mental health outcomes were measured dichotomously using the Patient Health Questionnaire-2 for depression and Mini-Z 2.0, for burnout, stress, and satisfaction. Weekly DHs were measured in seven categories at 10-h intervals. The prevalence ratios (PRs) between the DH categories were estimated for each outcome. Of the 6045 residents who provided data on DHs and psychological outcomes, 37.3% showed signs of depression, 21.6% experienced burn out, and 39.2% were highly stressed. In contrast, 62.3% were highly satisfied with their training. Proportions of burnout were higher among residents in Category 6 (≥ 90 and < 100 h; PR 1.36; 95% CI 1.11-1.66) and Category 7 (≥ 100 h; PR 1.36; 95% CI 1.10-1.68) compared with residents in Category 3 (≥ 60 and < 70 h; reference). The results partially support the weekly 80-h DH limit in terms of resident well-being.
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Affiliation(s)
- Kazuya Nagasaki
- Department of Internal Medicine, Mito Kyodo General Hospital, University of Tsukuba, 3-2-7, Miyamachi, Mito, Ibaraki, 310-0015, Japan
| | - Yuji Nishizaki
- Division of Medical Education, Juntendo University School of Medicine, Tokyo, Japan
| | - Tomohiro Shinozaki
- Department of Information and Computer Technology, Faculty of Engineering, Tokyo University of Science, Tokyo, Japan
| | - Taro Shimizu
- Department of Diagnostic and Generalist Medicine, Dokkyo Medical University Hospital, Tochigi, Japan
| | - Yu Yamamoto
- Division of General Medicine, Center for Community Medicine, Jichi Medical University, Tochigi, Japan
| | - Kiyoshi Shikino
- Department of General Medicine, Chiba University Hospital, Chiba, Japan
| | - Sho Fukui
- Immuno-Rheumatology Center, St. Luke's International Hospital, Tokyo, Japan
| | - Sho Nishiguchi
- Department of General Internal Medicine, Shonan Kamakura General Hospital, Kamakura, Japan
| | - Masaru Kurihara
- Department of Patient Safety, Nagoya University Hospital, Aichi, Japan
| | - Koshi Kataoka
- Division of Medical Education, Juntendo University School of Medicine, Tokyo, Japan
| | | | - Hiroyuki Kobayashi
- Department of Internal Medicine, Mito Kyodo General Hospital, University of Tsukuba, 3-2-7, Miyamachi, Mito, Ibaraki, 310-0015, Japan.
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