Relationship between the prevalence of guns & homicide rates in the US (2014)

TITLE: Examining the relationship between the prevalence of guns and homicide rates in the USA using a new and improved state-level gun ownership proxy
JOURNAL URL: http://injuryprevention.bmj.com/content/20/6/424.abstract?sid=30a4f9cc-d92f-4a89-812d-087d1404c7b3
AUTHORS: Michael Siegel, Craig S Ross, Charles King

ABSTRACT: Determining the relationship between gun ownership levels and firearm homicide rates is critical to inform public health policy. Previous research has shown that state-level gun ownership, as measured by a widely used proxy, is positively associated with firearm homicide rates. A newly developed proxy measure that incorporates the hunting license rate in addition to the proportion of firearm suicides correlates more highly with state-level gun ownership. To corroborate previous research, we used this new proxy to estimate the association of state-level gun ownership with total, firearm, and non-firearm homicides. Using state-specific data for the years 1981–2010, we modelled these rates as a function of gun ownership level, controlling for potential confounding factors. We used a negative binomial regression model and accounted for clustering of observations among states. We found that state-level gun ownership as measured by the new proxy, is significantly associated with firearm and total homicides but not with non-firearm homicides.

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