Packing heat may backfire

Published 7 October 2009

New study finds that people who carried guns were 4.5 times as likely to be shot and 4.2 times as likely to get killed compared with unarmed citizens; the authors of the study say it is not clear why this is the case, but suggest that it may be the case that guns give a sense of empowerment that causes carriers to overreact in tense situations, or encourages them to visit neighborhoods they probably should not

One of the main arguments offered by those who oppose gun control measures in the United States is that guns help protect their owners from crime. It now appears that packing heat may, well, backfire. People who carry guns are far likelier to get shot — and killed — than those who are unarmed, a study of shooting victims in Philadelphia, Pennsylvania, has found.

New Scientist’s Ewen Callaway writes that Charles Branas’s team at the University of Pennsylvania analyzed 677 shootings over two-and-a-half years to discover whether victims were carrying at the time, and compared them to other Philly residents of similar age, sex, and ethnicity. The team also accounted for other potentially confounding differences, such as the socioeconomic status of their neighborhood.

The United States has the highest rate of firearms-related homicide in the industrialized world, but the relationship between gun culture and violence is poorly understood. A recent study found that treating violence like an infectious disease led to a dramatic fall in shootings and killings.

Overall, Branas’s study found that people who carried guns were 4.5 times as likely to be shot and 4.2 times as likely to get killed compared with unarmed citizens. When the team looked at shootings in which victims had a chance to defend themselves, their odds of getting shot were even higher.

Callaway writes that while it may be that the type of people who carry firearms are simply more likely to get shot, it may be that guns give a sense of empowerment that causes carriers to overreact in tense situations, or encourages them to visit neighborhoods they probably should not, Branas speculates. Supporters of the Second Amendment should not worry that the right to bear arms is under threat, however. “We don’t have an answer as to whether guns are protective or perilous,” Branas says. “This study is a beginning.”

Daniel Webster, co-director of the Johns Hopkins Center for Gun Policy and Research in Baltimore, Maryland, thinks it is near-sighted to consider only the safety of gun owners and not their communities. “It affects others a heck of a lot more,” he says.

-read more in Charles C. Branas et al., “Investigating the Link Between Gun Possession and Gun Assault,” American Journal of Public Health (17 September 2009) (DOI: 10.2105/AJPH.2008.143099)