Harvard Injury Control Research Center: Gun Threats and Self-Defense Gun Use
1-3 Guns are not used millions of times each year in self-defense
We use epidemiological theory to explain why the "false positive" problem for rare events can lead to large overestimates of the incidence of rare diseases or rare phenomena such as self-defense gun use. We then try to validate the claims of many millions of annual self-defense uses against available evidence. We find that the claim of many millions of annual self-defense gun uses by American citizens is invalid.
4. Most purported self-defense gun uses are gun uses in escalating arguments and are both socially undesirable and illegal
We analyzed data from two national random-digit-dial surveys conducted under the auspices of the Harvard Injury Control Research Center. Criminal court judges who read the self-reported accounts of the purported self-defense gun use rated a majority as being illegal, even assuming that the respondent had a permit to own and to carry a gun, and that the respondent had described the event honestly from his own perspective.
5. Firearms are used far more often to intimidate than in self-defense.
Using data from a national random-digit-dial telephone survey conducted under the direction of the Harvard Injury Control Center, we examined the extent and nature of offensive gun use. We found that firearms are used far more often to frighten and intimidate than they are used in self-defense. All reported cases of criminal gun use, as well as many of the so-called self-defense gun uses, appear to be socially undesirable.