Well, it could be true. First pass at the abstract looks reasonable, but the full content isn't available to us plebs.
It does give me pause that of the 17,569,096 Californians in the cohort, 2293 died of homicide in a 12 year period. 13 per 100,000. Okay, sure.
The California homicide rate is 4.5 per 100,000 per year. [
1].
Over a 12 year period, that should work out to 54 per 100,000 over the 12 year period.
100000 - ((100000-4.5)/100000)^12 *100000)
So, why did so
few people in their cohort die due to homicide?