Study finds higher homicide risk in homes with handguns

NEW YORK (AP) — Most U.S. gun owners say they own firearms to protect themselves and their loved ones, surveys show. But a study published Monday suggests people who live with handgun owners are shot to death at a higher rate than those who don't have such weapons at home.

“We found zero evidence of any kind of protective effects” from living in a home with a handgun, said David Studdert, a Stanford University researcher who was the lead author of the Annals of Internal Medicine study.

The study has several shortcomings. For example, the researchers said they could not determine which victims were killed by the handgun owners or with the in-home weapons. They couldn't account for illegal guns and looked only at handguns, not rifles or other firearms.

The dataset also was limited to registered voters in California who were 21 and older. It's not clear that the findings are generalizable to the whole state, let alone to the rest of the country, the authors acknowledged.

But some outside experts said the work was well done, important and the largest research of its kind.

“I would call this a landmark study,” said Cassandra Crifasi, a gun violence policy researcher at Johns Hopkins University. “This contributes to our understanding of the potential causal relationship between guns in the home and homicides," she said.

California is unusual in that it offers gun ownership data and other information not obtainable in almost any other state. That allowed the researchers to follow millions of people over many years to try to better establish what happens when a person begins living in a home with handgun, they said.

The study focused on nearly 600,000 Californians who did not own handguns but began living in homes with handguns between October 2004 and December 2016 — either...