Relying on a sample of 1,381 US-based multiple homicide offenders (MHOs), we study the duration of the careers of this extremely violent category of offenders through Kaplan–Meier estimation and Cox Proportional Hazard regression. We investigate the characteristics of such careers in terms of length and we provide an inferential analysis investigating correlates of career duration. The models indicate that MHOs employing multiple methods, younger MHOs and MHOs that acted in more than one US state have higher odds of longer careers. When controlling for career-based attributes, female MHOs are also correlated with longer careers.

中文翻译：

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累犯的生存？与多重杀人罪犯的刑事职业生涯长度有关的揭示因素

根据美国1381名多重杀人罪犯（MHO）的样本，我们通过Kaplan-Meier估计和Cox比例危险度回归研究了这一极度暴力的罪犯类别的职业生涯。我们根据时长调查此类职业的特征，并提供推断分析，以调查职业持续时间的相关性。这些模型表明，采用多种方法的MHO，年轻的MHO和在美国多个州开展业务的MHO具有更长的职业生涯机会。在控制基于职业的属性时，女性MHO也与更长的职业相关。