@Humpleupagus @MCMLXVIIOTG @PNS I decided to go look up the vaccination rate in one of the most accident-prone metropolitan areas, and I'm forced to retract both my first explanation and my intuition. You're right.

COVID vaccination rate in the US broadly is 70%. In Dallas County, it's 62%. The 8% difference is huge, and the degree to which the people there get in accidents is enough to explain the study's results even if this was Dallas alone.