Association between shelter crowding and incidence of sleep disturbance among disaster evacuees: a retrospective medical chart review study

BMJ Open
Takahisa KawanoKohei Hasegawa

Abstract

We determined whether crowding at emergency shelters is associated with a higher incidence of sleep disturbance among disaster evacuees and identified the minimum required personal space at shelters. Retrospective review of medical charts. 30 shelter-based medical clinics in Ishinomaki, Japan, during the 46 days following the Great Eastern Japan Earthquake and Tsunami in 2011. Shelter residents who visited eligible clinics. Based on the result of a locally weighted scatter-plot smoothing technique assessing the relationship between the mean space per evacuee and cumulative incidence of sleep disturbance at the shelter, eligible shelters were classified into crowded and non-crowded shelters. The cumulative incidence per 1000 evacuees was compared between groups, using a Mann-Whitney U test. To assess the association between shelter crowding and the daily incidence of sleep disturbance per 1000 evacuees, quasi-least squares method adjusting for potential confounders was used. The 30 shelters were categorised as crowded (mean space per evacuee <5.0 m(2), 9 shelters) or non-crowded (≥ 5.0 m(2), 21 shelters). The study included 9031 patients. Among the eligible patients, 1079 patients (11.9%) were diagnosed with sleep disturbance. M...Continue Reading

References

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Citations

Dec 6, 2016·International Journal of Environmental Research and Public Health·Koh MizunoKatsuko Niwano
Oct 13, 2018·Journal of Sleep Research·Hajime IwasaUNKNOWN Mental Health Group of the Fukushima Health Management Survey
Jul 17, 2020·The Tohoku Journal of Experimental Medicine·Yayoi NakamuraShinichi Egawa
Jun 18, 2017·Archives of Environmental & Occupational Health·Takashi YorifujiShigeru Suganami
Jun 19, 2020·International Journal of Environmental Research and Public Health·Hitomi OgataKen Kiyono
Sep 7, 2018·International Journal of Biometeorology·Kazue Okamoto-MizunoKatsuko Niwano
Jun 10, 2021·Disaster Medicine and Public Health Preparedness·Osamu TokumaruJunnosuke Kumatani
Dec 11, 2021·Disaster Medicine and Public Health Preparedness·Shinya TadaYouichi Yanagawa
Dec 18, 2021·Inquiry : a Journal of Medical Care Organization, Provision and Financing·Seiji Hamanishi

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