Study suggests some gun controls could lead to more deaths?
http://www.usnews.com/news/articles/2016-03-10/study-some-gun-control-laws-result-in-more-deaths
"For the study, researchers looked at 25 state gun control laws to try to draw conclusions about which ones had the most impact on gun deaths. Its findings suggest that nine laws were associated with an increase in gun deaths, nine were associated with a decrease, and the remaining showed no association. For example, laws that restrict firearm access to children, including age restrictions, were shown to be ineffective."
The problem with this study, as it is with all studies of this type is that correlation between two variable does not prove causation. The effect may be caused by some other variable.
https://en.wikipedia.org/wiki/Correlation_does_not_imply_causation
Unfortunately, most of the research on gun control is junk when it comes to dealing with issues of causation and prevention.
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