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Medicina is published by MDPI from Volume 54 Issue 1 (2018). Articles in this Issue were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence. Articles are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Lithuanian Medical Association, Lithuanian University of Health Sciences, and Vilnius University.
Open AccessArticle

Correlation between suicide and meteorological parameters

1
Department of Hygiene, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
2
Department of Forensic Medicine, Faculty of Medicine, Kagawa University, Miki, Kagawa, Japan
3
Tokyo Medical Examiner's Office, Tokyo Metropolitan Government, Otsuka, Bunkyo-ku, Tokyo, Japan
*
Author to whom correspondence should be addressed.
Medicina 2015, 51(6), 363-367; https://doi.org/10.1016/j.medici.2015.11.006
Received: 26 June 2014 / Accepted: 10 November 2015 / Published: 21 November 2015
Objective: The aim of this study was to investigate the link between suicide and meteorological parameters in the 23 wards of Tokyo, Japan.
Materials and methods: Monthly data (from January 2008 to December 2012) of suicide stratified by the type of suicide, i.e. hanging, drowning and jumping, were obtained from the Tokyo Medical Examiner's Office official web site. Monthly meteorological parameters (atmospheric pressure, air temperature, humidity and daylight hours) in the 23 wards of Tokyo were also used for the required period. The effects of meteorological parameters on suicide were explored.
Results: The number of suicides was 110.4 ± 14.7 (80–149) for men and 55.6 ± 9.1 (41–87) for women in the 23 wards of Tokyo, Japan. The mean air temperature was 16.6 8C ± 7.7 8C (4.8–29.6 8C). The number of suicides by drowning for men was significantly and positively correlated with air temperature, and weakly and positively correlated with humidity. In addition, the number of suicides by drowning for men was significantly and negatively correlated with atmospheric pressure.
Conclusions: The number of suicides by drowning was associated with meteorological parameters, especially in men, in the 23 wards of Tokyo, Japan.
Keywords: Suicide; Air temperature; Atmospheric pressure; Drowning Suicide; Air temperature; Atmospheric pressure; Drowning
MDPI and ACS Style

Kurokouchi, M.; Miyatake, N.; Kinoshita, H.; Tanaka, N.; Fukunaga, T. Correlation between suicide and meteorological parameters. Medicina 2015, 51, 363-367.

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