Kaufman, Elinore JMorrison, Christopher NBranas, Charles CWiebe, Douglas J.2023-05-222023-05-222018-03-152018-03-20Kaufman EJ, Morrison CN, Branas CC, Wiebe DJ. State Firearm Laws and Interstate Firearm Deaths From Homicide and Suicide in the United States: A Cross-sectional Analysis of Data by County. JAMA Intern Med. Published online March 05, 2018. doi:10.1001/jamainternmed.2018.0190https://repository.upenn.edu/handle/20.500.14332/38256In a cross-sectional analysis of deaths from 2010 through 2014, states with strong gun laws had lower rates of firearm-related homicide and suicide than states with less regulation. Counties in states with less restrictive firearms laws had relatively lower rates of firearm-related homicide when they bordered states with strict gun laws. In contrast, rates of gun violence in areas with strong gun laws were unaffected by lenient laws in neighboring states. Restrictions on the sale and ownership of firearms may have measurable effects on rates of firearm deaths, with potential spillover across state lines.http://creativecommons.org/licenses/by-nd/4.0/firearmsfirearm violencegun violencehomicidesuicidefirearm policyBrief