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Seasonality in Violent and Nonviolent Methods of Suicide Attempts: A Cross-Sectional Study on Systematic Registry Data.
Acta Med Iran. 2017 Aug; 55(8):507-513.AM

Abstract

Little attention has been paid to seasonality in suicide in Iran. Time pattern in suicide deaths and suicide attempts for some related factors such as gender, mental disorders has been found. In present study, we focus on suicide methods and the association with seasonality and other putative covariates such as gender. Through a cross-sectional study, overall identified suicide attempts and suicide deaths in the province of Ilam from 1 January 2010 and 31 December 2014 were enrolled. We used Edwards' test for test of seasonality in suicide methods. Seasonal effect (peak/trough seasons) and (deaths/attempts suicide) was explored by ratio statistics, the null hypothesis being that the attempted suicides in each method group are evenly distributed over a year. More suicide attempts by hanging 29.4% and self-immolation 41.4% were observed in spring and differ by season pattern in both genders. The overall distribution of suicides by violent and non-violent methods was (males x2=6.3, P=0.041, females x2=7.7, P=0.021) and (males x2=44.5, P=0.001, females x2=104.7, P=0.001), respectively. The peak and trough seasons was observed in taking medications and self-poisoning for spring and winter. Suicide with alcohol was no differ by season pattern (x2=1.0, P=0.460). Suicide in Ilam illustrates a significant seasonality for both violent and non-violent methods of suicide, in both genders, the two peaks were observed in spring and autumn for violent suicides, and spring and summer in non-violent suicides.

Authors+Show Affiliations

Veisani Y
Psychosocial Injuries Research Center, Ilam University of Medical Sciences, Ilam, Iran.
Delpisheh A
Department of Clinical Epidemiology, School of Health, Ilam University of Medical Sciences, Ilam, Iran.
Sayehmiri K
Department of Biostatistics, School of Health, Ilam University of Medical Sciences, Ilam, Iran.
Moradi G
Social Determinants of Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran.
Hassanzadeh J
Department of Epidemiology, Research Center for Health Sciences, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran.

MeSH

AdolescentAdultAge FactorsCross-Sectional StudiesFemaleHumansIranMaleMiddle AgedRegistriesSex FactorsSuicideSuicide, AttemptedViolenceYoung Adult

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29034647

Citation

Veisani, Yousef, et al. "Seasonality in Violent and Nonviolent Methods of Suicide Attempts: a Cross-Sectional Study On Systematic Registry Data." Acta Medica Iranica, vol. 55, no. 8, 2017, pp. 507-513.
Veisani Y, Delpisheh A, Sayehmiri K, et al. Seasonality in Violent and Nonviolent Methods of Suicide Attempts: A Cross-Sectional Study on Systematic Registry Data. Acta Med Iran. 2017;55(8):507-513.
Veisani, Y., Delpisheh, A., Sayehmiri, K., Moradi, G., & Hassanzadeh, J. (2017). Seasonality in Violent and Nonviolent Methods of Suicide Attempts: A Cross-Sectional Study on Systematic Registry Data. Acta Medica Iranica, 55(8), 507-513.
Veisani Y, et al. Seasonality in Violent and Nonviolent Methods of Suicide Attempts: a Cross-Sectional Study On Systematic Registry Data. Acta Med Iran. 2017;55(8):507-513. PubMed PMID: 29034647.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Seasonality in Violent and Nonviolent Methods of Suicide Attempts: A Cross-Sectional Study on Systematic Registry Data. AU - Veisani,Yousef, AU - Delpisheh,Ali, AU - Sayehmiri,Kourosh, AU - Moradi,Ghobad, AU - Hassanzadeh,Jafar, PY - 2017/08/07/accepted PY - 2017/10/17/entrez PY - 2017/10/17/pubmed PY - 2018/4/17/medline KW - Iran KW - Methods KW - Seasonality KW - Suicide SP - 507 EP - 513 JF - Acta medica Iranica JO - Acta Med Iran VL - 55 IS - 8 N2 - Little attention has been paid to seasonality in suicide in Iran. Time pattern in suicide deaths and suicide attempts for some related factors such as gender, mental disorders has been found. In present study, we focus on suicide methods and the association with seasonality and other putative covariates such as gender. Through a cross-sectional study, overall identified suicide attempts and suicide deaths in the province of Ilam from 1 January 2010 and 31 December 2014 were enrolled. We used Edwards' test for test of seasonality in suicide methods. Seasonal effect (peak/trough seasons) and (deaths/attempts suicide) was explored by ratio statistics, the null hypothesis being that the attempted suicides in each method group are evenly distributed over a year. More suicide attempts by hanging 29.4% and self-immolation 41.4% were observed in spring and differ by season pattern in both genders. The overall distribution of suicides by violent and non-violent methods was (males x2=6.3, P=0.041, females x2=7.7, P=0.021) and (males x2=44.5, P=0.001, females x2=104.7, P=0.001), respectively. The peak and trough seasons was observed in taking medications and self-poisoning for spring and winter. Suicide with alcohol was no differ by season pattern (x2=1.0, P=0.460). Suicide in Ilam illustrates a significant seasonality for both violent and non-violent methods of suicide, in both genders, the two peaks were observed in spring and autumn for violent suicides, and spring and summer in non-violent suicides. SN - 1735-9694 UR - https://www.unboundmedicine.com/medline/citation/29034647/Seasonality_in_Violent_and_Nonviolent_Methods_of_Suicide_Attempts:_A_Cross_Sectional_Study_on_Systematic_Registry_Data_ DB - PRIME DP - Unbound Medicine ER -