Homicide-suicides compared to homicides and suicides: systematic review and meta-analysis.

Panczak, Radoslaw; Geissbühler, Michael; Zwahlen, Marcel; Killias, Martin; Tal, Kali; Egger, Matthias (2013). Homicide-suicides compared to homicides and suicides: systematic review and meta-analysis. Forensic science international, 233(1-3), pp. 28-36. Elsevier Scientific Publ. Ireland 10.1016/j.forsciint.2013.08.017

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Homicide-suicides, the murder of one or several individuals followed by the suicide of the perpetrator, are rare but have devastating effects on families and communities. We did a systematic review and meta-analysis of studies comparing perpetrators of homicide-suicides with perpetrators of simple homicides and suicides and examined the proportion of firearm use and its correlation with firearm availability. We searched Medline and Embase from inception to July 2012 and identified 27 eligible studies. Perpetrators of homicide-suicides were older and more likely to be male and married to or separated from their victims than perpetrator of simple homicides or suicides. Influence of alcohol and a history of domestic violence or unemployment were less prevalent in homicide-suicides than in homicides. The proportion of firearm use in homicide-suicides varied across countries and was highest in the USA, Switzerland and South Africa, followed by Australia, Canada, The Netherlands and England and Wales, with a strong correlation between the use of firearms and the level of civilian gun ownership in the country. Our results indicate that homicide-suicides represent a distinct entity, with characteristics distinguishing them both from homicides and suicides.

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