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Seasonality of suicide in Sweden: relationship with psychiatric disorder
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience.
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2009 (English)In: Journal of Affective Disorders, ISSN 0165-0327, E-ISSN 1573-2517, Vol. 119, no 1-3, 59-65 p.Article in journal (Refereed) Published
Abstract [en]

Background: Little is known as to whether suicide seasonality is   related to psychiatric disorders affecting suicide risk/incidence. The   present study aims to assess suicide seasonality patterns with regard   to the history of psychiatric morbidity among suicide victims.   Methods: The history of psychiatric inpatient diagnoses in the five   years prior to suicide was identified among all suicides in Sweden from   1992 to 2003. Suicide seasonality was estimated as the relative risk of   suicide during the month of highest to that in the month of lowest   suicide incidence. Analyses were performed with respect to sex, suicide   method and history of inpatient treatment of psychiatric disorder.   Results: Among both male (n = 9,902) and female (n = 4,128) suicide   victims, there were peaks in suicide incidence in the spring/early   summer. This seasonal variation was more evident in suicide victims   with a psychiatric inpatient diagnosis than in those without such a   diagnosis. A seasonal variation was found in most diagnostic groups,   with significant peaks in males with a history of depression and in   females with a history of a neurotic, stress-related, or somatoform   disorder. Overall, suicide seasonality was more evident in violent than   in non-violent suicide methods.   Limitation: Only psychiatric disorders severe enough to require   hospital admission were studied.   Conclusion: A history of inpatient-treated psychiatric disorder appears   to be associated with an increase in suicide seasonality, especially in   violent suicide methods. This increase is found in several psychiatric disorders.

Place, publisher, year, edition, pages
2009. Vol. 119, no 1-3, 59-65 p.
Keyword [en]
Suicide, Seasonality, Psychiatric illness, Suicide methods, Sex differences
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-124594DOI: 10.1016/j.jad.2009.02.020ISI: 000271760000009PubMedID: 19327843OAI: oai:DiVA.org:uu-124594DiVA: diva2:317727
Available from: 2010-05-05 Created: 2010-05-05 Last updated: 2013-10-16Bibliographically approved

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Papadopoulos, Fotios C.
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Department of NeurosciencePsychiatry, University Hospital
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