I've been pretty diligent about recording my commuting days and mileage since starting my current job a little over five years ago, and realized that I have a good amount of data to relate to serious cycling accidents. How many accidents have you had, versus how many miles and trips? Are there any other factors common to them?

I have broken a collarbone twice, and one collision with a cyclist left a gash in my forearm which should have had stitches, so I'm calling it three. I'm not counting little spills with maybe light bruising or road rash, because I don't remember more than a few. Only include actual commuting.

So for me: 1160 round trips, 21000 miles, 3 injuries

= an injury every 7,000 commuting miles, or every 387 commuting days

All injuries occurred commuting, and on the way home, and had another entity (car, jogger, cyclist) as a proximate cause. That makes sense since I'm in all types of weather going home, tend to push the limit then, and I'm probably more tired than on other rides.

What are your stats?