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Suicide in first episode psychosis: A nationwide cohort study
Stockholm University, Faculty of Social Sciences, Centre for Health Equity Studies (CHESS). Karolinska Institutet, Sweden.
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2014 (English)In: Schizophrenia Research, ISSN 0920-9964, E-ISSN 1573-2509, Vol. 157, no 1-3, 1-7 p.Article in journal (Refereed) Published
Abstract [en]

Background: Relatively little is known about suicide in diagnostic subtypes of first episode psychosis (FEP). Our aim was to assess suicide rates and potential risk factors for suicide in FEP. Methods: This is a national register-based cohort study of patients born in 1973-1978 in Sweden and who were hospitalized with a FEP between ages 15 and 30 years (n = 2819). The patients were followed from date of discharge until death, emigration, or 31st of December 2008. The suicide rates for six diagnostic subtypes of FEP were calculated. Suicide incidence rate ratios (IRRs) were calculated to evaluate the association between suicide and psychiatric, familial, social, and demographic factors. Results: In total 121 patients died by suicide. The overall suicide rate was 4.3 (95% confidence interval [CI] 3.5-5.0) per 1000 person-years. The highest suicide rates were found in depressive disorder with psychotic symptoms and in delusional disorder. In an adjustedmodel, the strongest risk factors for suicide were self-harm (IRR 2.7, CI 1.7-4.4) or a conviction for violent crime (IRR 2.0, CI 1.3-3.2). Also having a first-degree relative with a schizophrenia/bipolar diagnosis (IRR 2.1, CI 1.2-3.6) or substance use disorder (IRR 2.0, CI 1.2-3.2) were significant risk factors for suicide. Conclusions: Impulsive behavior such as self-harm as well as having a family history of severe mental disorder or substance use are important risk factors for suicide in FEP.

Place, publisher, year, edition, pages
2014. Vol. 157, no 1-3, 1-7 p.
National Category
URN: urn:nbn:se:su:diva-107995DOI: 10.1016/j.schres.2014.05.010ISI: 000341314100001OAI: diva2:752945


Available from: 2014-10-06 Created: 2014-10-06 Last updated: 2014-10-06Bibliographically approved

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Hjern, Anders
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