To prevent intimate partner homicide (IPH), some states have adopted laws restricting firearm possession by intimate partner violence (IPV) offenders. “Possession” laws prohibit the possession of firearms by these offenders. “Relinquishment” laws prohibit firearm possession and also explicitly require offenders to surrender their firearms. Few studies have assessed the effect of these policies.

To study the association between state IPV-related firearm laws and IPH rates over a 25-year period (1991 to 2015).

Panel study.

United States, 1991 to 2015.

Homicides committed by intimate partners, as identified in the Federal Bureau of Investigation's Uniform Crime Reports, Supplementary Homicide Reports.

IPV-related firearm laws (predictor) and annual, state-specific, total, and firearm-related IPH rates (outcome).

State laws that prohibit persons subject to IPV-related restraining orders from possessing firearms and also require them to relinquish firearms in their possession were associated with 9.7% lower total IPH rates (95% CI, 3.4% to 15.5% reduction) and 14.0% lower firearm-related IPH rates (CI, 5.1% to 22.0% reduction) than in states without these laws. Laws that did not explicitly require relinquishment of firearms were associated with a non–statistically significant 6.6% reduction in IPH rates.

The model did not control for variation in implementation of the laws. Causal interpretation is limited by the observational and ecological nature of the analysis.

Our findings suggest that state laws restricting firearm possession by persons deemed to be at risk for perpetrating intimate partner abuse may save lives. Laws requiring at-risk persons to surrender firearms already in their possession were associated with lower IPH rates.

Robert Wood Johnson Foundation.

为了防止亲密伴侣凶杀 (IPH)，一些州通过了限制亲密伴侣暴力 (IPV) 罪犯持有枪支的法律。“持有”法禁止这些罪犯持有枪支。“放弃”法律禁止持有枪支，并明确要求犯罪者交出枪支。很少有研究评估这些政策的效果。

研究 25 年期间（1991 年至 2015 年）内与州 IPV 相关的枪支法律与 IPH 率之间的关联。

小组研究。

美国，1991 年至 2015 年。

由亲密伴侣犯下的凶杀案，如联邦调查局的统一犯罪报告，补充凶杀案报告中所述。

与 IPV 相关的枪支法律（预测变量）和年度、特定州、总和与枪支相关的 IPH 率（结果）。

禁止受 IPV 相关限制令约束的人拥有枪支并要求他们放弃所拥有枪支的州法律与总 IPH 率降低 9.7%（95% CI，降低 3.4% 至 15.5%）和降低 14.0% 相关与没有这些法律的州相比，与枪支相关的 IPH 率（CI，降低 5.1% 至 22.0%）。没有明确要求放弃枪支的法律与 IPH 率降低 6.6% 相关，但无统计学意义。

该模型没有控制法律实施的变化。因果解释受到分析的观察和生态性质的限制。

我们的研究结果表明，州法律限制被认为有虐待亲密伴侣风险的人持有枪支可能会挽救生命。要求有风险的人交出他们已经拥有的枪支的法律与较低的 IPH 率有关。

罗伯特伍德约翰逊基金会。