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The relationship of the extent of gun ownership and the strictness of gun control laws to suicide and homicide rates in the nine major geographic regions of the United States was explored. Gun ownership, rather than the strictness of gun control laws, was found to be the strongest correlate of the rates of suicide and homicide by guns. Regions with a higher extent of gun ownership had higher rates of suicide and homicide by firearms.
David Lester (Wed,) studied this question.