In article , says...

"David Kerber" wrote

Which makes no sense, so recheck your assumptions. There are a few
possible confounding circumstances, though. One is that the people who
put in the most miles may wear their helmet more consistently than
occasional riders.

And those people with more miles should, by virtue of experience, be better
riders. *Less* likely to crash.

Less likely *per mile*, but with enough extra miles, they are going to
have more crashes overall. A guy who puts in 30 miles per day, every day
has a lot more chance of crashing in any given year than a kid who rides
only 1 block to his friends house twice in a year.


--
David Kerber
An optimist says "Good morning, Lord." While a pessimist says "Good
Lord, it's morning".

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