Is survival after out-of-hospital cardiac arrests worse during days of national academic meetings in Japan? A population-based study

Kitamura, Tetsuhisa; Kiyohara, Kosuke; Matsuyama, Tasuku; Hatakeyama, Toshihiro; Shimamoto, Tomonari; Izawa, Junichi; Nishiyama, Chika; Iwami, Taku

doi:https://doi.org/10.2188/jea.JE20150100

Is survival after out-of-hospital cardiac arrests worse during days of national academic meetings in Japan? A population-based study

Kitamura, Tetsuhisa; Kiyohara, Kosuke; Matsuyama, Tasuku et al.

Journal of Epidemiology, 2016, 26(3), 155-162

Number of Access:785（2025-10-21 16:01 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/78407

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Title	Is survival after out-of-hospital cardiac arrests worse during days of national academic meetings in Japan? A population-based study
Creator	NRID 1000030639810 1000030639810 ORCID 0000-0003-0107-0580 0000-0003-0107-0580 researchmap permalink Kitamura_T Kitamura_T Scopus Author ID 22234282700 22234282700 CreatorName Kitamura, Tetsuhisa
	NRID 1000080581834 1000080581834 CreatorName Kiyohara, Kosuke
	NRID 1000050829025 1000050829025 CreatorName Matsuyama, Tasuku
	CreatorName Hatakeyama, Toshihiro
	NRID 1000010828411 1000010828411 CreatorName Shimamoto, Tomonari
	CreatorName Izawa, Junichi
	NRID 1000040584842 1000040584842 CreatorName Nishiyama, Chika
	NRID 1000060437291 1000060437291 CreatorName Iwami, Taku
Subject	Cardiopulmonary resuscitation
	National academic meeting
	Out-of-hospital cardiac arrest
	Outcome
Description	Tetsuhisa Kitamura, Kosuke Kiyohara, Tasuku Matsuyama, Toshihiro Hatakeyama, Tomonari Shimamoto, Junichi Izawa, Chika Nishiyama, Taku Iwami, Is Survival After Out-of-Hospital Cardiac Arrests Worse During Days of National Academic Meetings in Japan? A Population-Based Study, Journal of Epidemiology, 2016, Volume 26, Issue 3, Pages 155-162, Released March 05, 2016, [Advance publication] Released December 05, 2015, Online ISSN 1349-9092, Print ISSN 0917-5040, https://doi.org/10.2188/jea.JE20150100, https://www.jstage.jst.go.jp/article/jea/26/3/26_JE20150100/_article/-char/en
Abstract	Background: Outcomes after out-of-hospital cardiac arrests (OHCAs) might be worse during academic meetings because many medical professionals attend them. Methods: This nationwide population-based observation of all consecutively enrolled Japanese adult OHCA patients with resuscitation attempts from 2005 to 2012. The primary outcome was 1-month survival with a neurologically favorable outcome. Calendar days at three national meetings (Japanese Society of Intensive Care Medicine, Japanese Association for Acute Medicine, and Japanese Circulation Society) were obtained for each year during the study period, because medical professionals who belong to these academic societies play an important role in treating OHCA patients after hospital admission, and we identified two groups: the exposure group included OHCAs that occurred on meeting days, and the control group included OHCAs that occurred on the same days of the week 1 week before and after meetings. Multiple logistic regression analysis was used to adjust for confounding variables. Results: A total of 20 143 OHCAs that occurred during meeting days and 38 860 OHCAs that occurred during nonmeeting days were eligible for our analyses. The proportion of patients with favorable neurologic outcomes after whole arrests did not differ during meeting and non-meeting days (1.6% [324/20 143] vs 1.5% [596/38 855]; adjusted odds ratio 1.02; 95% confidence interval, 0.88-1.19). Regarding bystander-witnessed ventricular fibrillation arrests of cardiac origin, the proportion of patients with favorable neurologic outcomes also did not differ between the groups. Conclusions: In this population, there were no significant differences in outcomes after OHCAs that occurred during national meetings of professional organizations related to OHCA care and those that occurred during nonmeeting days.
Publisher	Japan Epidemiology Association
Source Title	Journal of Epidemiology
Volume (Issue)	26(3)
Page	155-162
Date of Issued	2016-03-05
Language	English
Handle URL	https://hdl.handle.net/11094/78407
PISSN	09175040
eISSN	13499092
NCID	AA1201887X
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.2188/jea.JE20150100
Relation.isIdenticalTo	PMID 26639754
Access Rights	open access
CopyRight	© 2015 Tetsuhisa Kitamura et al. This article is licensed under a Creative Commons Attribution 3.0 Unported License.
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Journal of Epidemiology. 2016, 26(3), p. 155-162
DC.title	Is survival after out-of-hospital cardiac arrests worse during days of national academic meetings in Japan? A population-based study
DC.creator	Kitamura, Tetsuhisa
	Kiyohara, Kosuke
	Matsuyama, Tasuku
	Hatakeyama, Toshihiro
	Shimamoto, Tomonari
	Izawa, Junichi
	Nishiyama, Chika
	Iwami, Taku
DC.publisher	Japan Epidemiology Association
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2016-03-05
DC.identifier	https://doi.org/10.2188/jea.JE20150100
DC.subject	Cardiopulmonary resuscitation
	National academic meeting
	Out-of-hospital cardiac arrest
	Outcome
DC.description	Tetsuhisa Kitamura, Kosuke Kiyohara, Tasuku Matsuyama, Toshihiro Hatakeyama, Tomonari Shimamoto, Junichi Izawa, Chika Nishiyama, Taku Iwami, Is Survival After Out-of-Hospital Cardiac Arrests Worse During Days of National Academic Meetings in Japan? A Population-Based Study, Journal of Epidemiology, 2016, Volume 26, Issue 3, Pages 155-162, Released March 05, 2016, [Advance publication] Released December 05, 2015, Online ISSN 1349-9092, Print ISSN 0917-5040, https://doi.org/10.2188/jea.JE20150100, https://www.jstage.jst.go.jp/article/jea/26/3/26_JE20150100/_article/-char/en
DCTERMS.abstract	Background: Outcomes after out-of-hospital cardiac arrests (OHCAs) might be worse during academic meetings because many medical professionals attend them. Methods: This nationwide population-based observation of all consecutively enrolled Japanese adult OHCA patients with resuscitation attempts from 2005 to 2012. The primary outcome was 1-month survival with a neurologically favorable outcome. Calendar days at three national meetings (Japanese Society of Intensive Care Medicine, Japanese Association for Acute Medicine, and Japanese Circulation Society) were obtained for each year during the study period, because medical professionals who belong to these academic societies play an important role in treating OHCA patients after hospital admission, and we identified two groups: the exposure group included OHCAs that occurred on meeting days, and the control group included OHCAs that occurred on the same days of the week 1 week before and after meetings. Multiple logistic regression analysis was used to adjust for confounding variables. Results: A total of 20 143 OHCAs that occurred during meeting days and 38 860 OHCAs that occurred during nonmeeting days were eligible for our analyses. The proportion of patients with favorable neurologic outcomes after whole arrests did not differ during meeting and non-meeting days (1.6% [324/20 143] vs 1.5% [596/38 855]; adjusted odds ratio 1.02; 95% confidence interval, 0.88-1.19). Regarding bystander-witnessed ventricular fibrillation arrests of cardiac origin, the proportion of patients with favorable neurologic outcomes also did not differ between the groups. Conclusions: In this population, there were no significant differences in outcomes after OHCAs that occurred during national meetings of professional organizations related to OHCA care and those that occurred during nonmeeting days.
DC.rights	© 2015 Tetsuhisa Kitamura et al. This article is licensed under a Creative Commons Attribution 3.0 Unported License.
DC.format	78407
citation_title	Is survival after out-of-hospital cardiac arrests worse during days of national academic meetings in Japan? A population-based study
citation_author	Kitamura, Tetsuhisa
	Kiyohara, Kosuke
	Matsuyama, Tasuku
	Hatakeyama, Toshihiro
	Shimamoto, Tomonari
	Izawa, Junichi
	Nishiyama, Chika
	Iwami, Taku
citation_publisher	Japan Epidemiology Association
citation_language	English
citation_date	2016-03-05
citation_journal_title	Journal of Epidemiology
citation_volume	26
citation_issue	3
citation_firstpage	155
citation_lastpage	162
citation_doi	https://doi.org/10.2188/jea.JE20150100
citation_pmid	26639754
citation_public_url	https://hdl.handle.net/11094/78407

Is survival after out-of-hospital cardiac arrests worse during days of national academic meetings in Japan? A population-based study

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