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Geographical Differences and the National Meeting Effect in Patients with Out-of-Hospital Cardiac Arrests: A JCS–ReSS Study Report

by 1,*, 1, 2, 3, 4, 5, 6, 7, 8 and 9 on behalf of the Japanese Circulation Society Resuscitation Science Study (JCS-ReSS) Group
1
Department of Emergency, Critical Care, and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Kita-ku, Shikata-cho, Okayama 700-8558, Japan
2
Department of Epidemiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Kita-ku, Shikata-cho, Okayama 700-8558, Japan
3
Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka 564-8565, Japan
4
National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Kodaira, Tokyo 187-8551, Japan
5
Intensive Care Center, Shizuoka General Hospital, 4-27-1 Kitaando, Aoiku, Shizuoka 420-8527, Japan
6
Cardiovascular Center, Nihon University Hospital, 1-8-13 Kanda Surugadai, Chiyoda-ku, Tokyo 101-8309, Japan
7
Department of Cardiovascular Medicine, Toho University Faculty of Medicine, 5-21-16 Omorinishi, Ota-ku, Tokyo 143-8540, Japan
8
Cardiovascular Medicine, Kawaguchi Cardiovascular and Respiratory Hospital, 1-1-51 Maekawa Kawaguchi-shi, Saitama 333-0842, Japan
9
Department of Cardiovascular Medicine, Kyushu University Faculty of Medical Sciences, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(24), 5130; https://doi.org/10.3390/ijerph16245130
Received: 16 November 2019 / Revised: 6 December 2019 / Accepted: 12 December 2019 / Published: 16 December 2019
The “national meeting effect” refers to worse patient outcomes when medical professionals attend academic meetings and hospitals have reduced staffing. The aim of this study was to examine differences in outcomes of patients with out-of-hospital cardiac arrest (OHCA) admitted during, before, and after meeting days according to meeting location and considering regional variation of outcomes, which has not been investigated in previous studies. Using data from a nationwide, prospective, population-based, observational study in Japan, we analyzed adult OHCA patients who underwent resuscitation attempts between 2011 and 2015. Favorable one-month neurological outcomes were compared among patients admitted during the relevant annual meeting dates of three national scientific societies, those admitted on identical days the week before, and those one week after the meeting dates. We developed a multivariate logistic regression model after adjusting for confounding factors, including meeting location and regional variation (better vs. worse outcome areas), using the “during meeting days” group as the reference. A total of 40,849 patients were included in the study, with 14,490, 13,518, and 12,841 patients hospitalized during, before, and after meeting days, respectively. The rates of favorable neurological outcomes during, before, and after meeting days was 1.7, 1.6, and 1.8%, respectively. After adjusting for covariates, favorable neurological outcomes did not differ among the three groups (adjusted OR (95% CI) of the before and after meeting dates groups was 1.03 (0.83–1.28) and 1.01 (0.81–1.26), respectively. The “national meeting effect” did not exist in OHCA patients in Japan, even after comparing data during, before, and after meeting dates and considering meeting location and regional variation. View Full-Text
Keywords: out-of-hospital cardiac arrest; outcome; national meeting; cardiopulmonary resuscitation out-of-hospital cardiac arrest; outcome; national meeting; cardiopulmonary resuscitation
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MDPI and ACS Style

Yumoto, T.; Naito, H.; Yorifuji, T.; Tahara, Y.; Yonemoto, N.; Nonogi, H.; Nagao, K.; Ikeda, T.; Sato, N.; Tsutsui, H., on behalf of the Japanese Circulation Society Resuscitation Science Study (JCS-ReSS) Group. Geographical Differences and the National Meeting Effect in Patients with Out-of-Hospital Cardiac Arrests: A JCS–ReSS Study Report. Int. J. Environ. Res. Public Health 2019, 16, 5130. https://doi.org/10.3390/ijerph16245130

AMA Style

Yumoto T, Naito H, Yorifuji T, Tahara Y, Yonemoto N, Nonogi H, Nagao K, Ikeda T, Sato N, Tsutsui H on behalf of the Japanese Circulation Society Resuscitation Science Study (JCS-ReSS) Group. Geographical Differences and the National Meeting Effect in Patients with Out-of-Hospital Cardiac Arrests: A JCS–ReSS Study Report. International Journal of Environmental Research and Public Health. 2019; 16(24):5130. https://doi.org/10.3390/ijerph16245130

Chicago/Turabian Style

Yumoto, Tetsuya, Hiromichi Naito, Takashi Yorifuji, Yoshio Tahara, Naohiro Yonemoto, Hiroshi Nonogi, Ken Nagao, Takanori Ikeda, Naoki Sato, and Hiroyuki Tsutsui on behalf of the Japanese Circulation Society Resuscitation Science Study (JCS-ReSS) Group. 2019. "Geographical Differences and the National Meeting Effect in Patients with Out-of-Hospital Cardiac Arrests: A JCS–ReSS Study Report" International Journal of Environmental Research and Public Health 16, no. 24: 5130. https://doi.org/10.3390/ijerph16245130

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