“But studies suggest that stricter state gun laws do make a difference. In a study published in the May 13, 2013, issue of JAMA Internal Medicine, researchers concluded that states with the most firearm legislation have the lowest rates of firearm-associated deaths, as well as the lowest rates of both murders and suicides with guns. The quarter of states with the strictest laws had 6.64 fewer deaths per 100,000 inhabitants than the quarter with the least regulation [source:
Fleegler et al.].”
Makes sense.