Domestic homicides account for more than one in four homicides in the United States and frequently involve multiple victims. This study examined the prevalence of firearm use in domestic homicides in the United States and the associated risk of a multiple homicide event. We used weighted negative binomial regression to model the effects of firearm use on the number of additional victims in domestic and nondomestic homicides using data from the Federal Bureau of Investigation's Supplementary Homicide Reports. Results showed that firearms were used in 54.1 percent of domestic homicides. Firearm use was associated with a 70.9 percent and 38.7 percent increased incidence of additional victimization in domestic and nondomestic homicides, respectively. Whereas male and female perpetrators differed minimally in the likelihood of additional victims in domestic homicides committed with a non-firearm (3.6% versus 2.5%), males were nearly three times more likely to have multiple victims in domestic homicides involving a firearm (6.9% versus 2.4%). Interaction tests showed that the risk of additional victims associated with firearm use was stronger in domestic situations than in nondomestic situations and among male perpetrators. These findings highlight the risk of multiple homicides in domestic homicide situations and the role of firearms in expanding the risk of victimization beyond a single victim.

中文翻译：

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使用枪支增加了家庭凶杀中多个被害人的风险。

在美国，家庭凶杀占四分之一以上的凶杀，经常涉及多个受害者。这项研究调查了美国家庭凶杀中枪支使用的普遍性以及多重凶杀事件的相关风险。我们使用加权负二项式回归来模拟枪支使用对家庭和非家庭凶杀中其他受害者人数的影响，方法是使用联邦调查局补充性凶杀报告中的数据。结果显示，在家庭杀人案中，使用枪支的占54.1％。在国内和非家庭凶杀案中，枪支使用分别增加了70.9％和38.7％的额外受害率。男性和女性肇事者在使用非火器的家庭凶杀中增加受害者的可能性差异最小（3.6％比2.5％），而男性在涉及火器的家庭凶杀中有多个受害者的可能性几乎是男性的三倍（6.9％）对比2.4％）。交互作用测试表明，在家庭情况下，与非家庭情况下以及在男性犯罪者中，与使用枪支有关的其他受害者的风险更大。这些发现强调了在家庭凶杀案中多重凶杀的风险，以及枪支在将受害风险扩大到单个受害者之外的作用。交互作用测试表明，在家庭情况下，与非家庭情况下以及在男性犯罪者中，与使用枪支有关的其他受害者的风险更大。这些发现强调了在家庭凶杀案中多重凶杀的风险，以及枪支在将受害风险扩大到单个受害者之外的作用。交互作用测试表明，在家庭情况下，与非家庭情况下以及在男性犯罪者中，与使用枪支有关的其他受害者的风险更大。这些发现强调了在家庭凶杀案中多重凶杀的风险，以及枪支在将受害风险扩大到单个受害者之外的作用。