Department of Health Sciences, University of Florence, 50134 Florence, Italy.
Department of Humanities, Social Sciences and Education-SUSeF, University of Molise, 86100 Campobasso, Italy.
Int J Environ Res Public Health. 2022 Dec 17;19(24):16991. doi: 10.3390/ijerph192416991.
Homicide-suicide can be defined as homicide followed by the suicide of the perpetrator shortly afterward. In the so-called "homicide-delayed suicide", homicide and suicide occur but within a wide and not strictly defined timeframe. This study analyzes data concerning the suicide of 667 inmates in Italy between 2002 and 2015, considering homicide perpetrators compared to all offenders. The analyses revealed that inmates who had committed homicide were more likely to commit suicide (71% versus 45%; χ2 = 10.952, = 0.001) and the odds of suicide increase concerning 1.58 times among homicide perpetrators. The time-to-suicide interval after homicide ranges between 0 to 9.125 days (mean = 1.687,9; SD = 2.303,1). Moreover, the intimate-homicide offenders who committed suicide had a significantly shorter survival time after the offense than did the other non-intimate offenders who died by suicide ( test, = -3.56, df = 90, = 0.001). The link between homicide and higher suicide risk in homicide perpetrators should be highlighted because of all the homicide offenders passing through the criminal justice system. Superior knowledge about the path of homicide-delayed suicide will be of particular use to professionals in evaluating and treating homicide inmates.
杀人后自杀可以被定义为凶手在随后不久自杀。在所谓的“杀人后延迟自杀”中，杀人行为和自杀行为发生，但在一个广泛而没有严格定义的时间框架内。本研究分析了 2002 年至 2015 年间意大利 667 名囚犯自杀的数据，将杀人凶手与所有罪犯进行了比较。分析显示，杀人凶手更有可能自杀（71%对 45%；χ2=10.952， =0.001），杀人凶手自杀的几率增加 1.58 倍。杀人后的自杀时间间隔在 0 到 9.125 天之间（平均值=1.687，9；SD=2.303，1）。此外，与其他非亲密关系的自杀罪犯相比，实施亲密关系杀人并随后自杀的罪犯在犯罪后存活时间明显缩短（test， =-3.56，df=90， =0.001）。应该强调的是，由于所有杀人罪犯都要经过刑事司法系统，因此杀人行为与杀人凶手更高的自杀风险之间存在联系。对杀人后延迟自杀途径的更深入了解将对评估和治疗杀人罪犯的专业人员特别有用。
