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I agree it's a mistake to treat passengers and pedestrians equally to drivers, but it's absurd to say that they "could not have caused crashes through undesirable behavior". Reckless pedestrians or passengers can *absolutely* lead to accidents!


DJAD: Sure, I should have phrased that not as an absolute. Your comment raises the same problem from another angle: if we assume (wrongly) that passengers are the cause of most crashes, in that case, the drivers would not have benefitted regardless of vaccination status since they did not engage in rule breaking.

Dave C.

A couple of key assumptions being made:

1) "Involved in" an accident means "at fault" in the accident.
For bicyclists and pedestrians, this is obviously untrue. But even if one car hits another, generally only one is at fault.

2) Assumption that unvaccinated is a "rule breaker." Vaccines were first targeted to those most at risk because of underlying medical conditions. It may simply be that unvaccinated people are, on average, healthier and more likely to be driving.


DC: This is why they should have adjusted for prior traffic accidents, prior healthcare usage, etc. Or at least showed statistics comparing the two groups so we can see whether there was preexisting bias. I'm surprised they didn't do this as it is pretty standard for observational studies to compare pre vs post rather than just look at post.

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