Importance Over 30 000 people die annually in the United States from injuries caused by
firearms. Although most firearm laws are enacted by states, whether the laws are associated
with rates of firearm deaths is uncertain. Objective To evaluate whether more firearm laws in
a state are associated with fewer firearm fatalities. Design Using an ecological and cross-
sectional method, we retrospectively analyzed all firearm-related deaths reported to the
Centers for Disease Control and Prevention Web-based Injury Statistics Query and …