Likewise, data associated with the effects of gun control laws in various geographical areas represent random, demographically diverse places in which such data is available.

Many aspects of the gun control issue are best measured and sometimes can only be measured through surveys,[1] but the accuracy of such surveys depends upon respondents providing truthful answers to questions that are sometimes controversial and potentially incriminating.[2] Thus, Just Facts uses such data critically, citing the best-designed surveys we find, detailing their inner workings in our footnotes, and using the most cautious plausible interpretations of the results.