I believe John Lott wrote an article showing that the research for this study was faulty. I recall seeing it early today but cannot remember where I found the link.
https://thefederalist.com/2023/04/14/that-kaiser-gun-study-the-media-loves-is-garbage/
Here is one article I read refuting the latest gun control study.
“It’s become virtually impossible to find reliable data or polling on gun violence these days. A new Kaiser Family Foundation report being shared by virtually every major media outlet this week offers us a good example of why. The headlines report that “1 in 5 adults” in the United States claim that a “family member” has been “killed” by a gun. And, let’s just say, that’s a highly dubious claim.”