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badí ˝í˛˝sector wrote on Sat, 25 May 2024 21:43:23 -0400 :
In order to have any meaningful correlation between cell phones in cars
and their effect on accidents one would have to know how many of those
cell phones were in use while driving and also the accident rate in
those cars as compared to the others. Without this in the case of
cell-phone correlation the supplied study provides just irrelevant
statistical noise.
You bring up a point that we discussed in gory detail in the past, which is
that nobody knows much about the actual usage rate of cellphones. We all
know people use them; but we have no reliable data on how much they're
used.
I covered this in gory detail where the NHTSA reports every May of every
year (as I recall) on cellphone *usage* rates; but - get this - they
calculate that at red lights. Yes. Red lights. They hvae a person sitting
on the side peering into vehicles to note how many people are using them.
Clearly this is a flawed statistic
Again, this was covered in gory detail in the past, the point being that
the most *reliable* statistic we have is the accident rate (which is number
of accidents normalized by the number of miles driven).
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