• Carolina Díez, Rachel P Kurland, Emily F Rothman, Megan Bair-Merritt, Eric Fleegler, Ziming Xuan, Sandro Galea, Craig S Ross, Bindu Kalesan, Kristin A Goss, and Michael Siegel.
• From Boston University School of Public Health, Boston University School of Medicine, Boston Children's Hospital, and Harvard Medical School, Boston, Massachusetts, and Sanford School of Public Policy, Duke University, Durham, North Carolina.
• Ann. Intern. Med. 2017 Oct 17; 167 (8): 536-543.

BackgroundTo 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.ObjectiveTo study the association between state IPV-related firearm laws and IPH rates over a 25-year period (1991 to 2015).DesignPanel study.SettingUnited States, 1991 to 2015.ParticipantsHomicides committed by intimate partners, as identified in the Federal Bureau of Investigation's Uniform Crime Reports, Supplementary Homicide Reports.MeasurementsIPV-related firearm laws (predictor) and annual, state-specific, total, and firearm-related IPH rates (outcome).ResultsState 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.LimitationsThe model did not control for variation in implementation of the laws. Causal interpretation is limited by the observational and ecological nature of the analysis.ConclusionOur 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.Primary Funding SourceRobert Wood Johnson Foundation.

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