Originally Posted by cyclintom
Firstly - in minor accidents in which a helmet is likely to be ABLE to do some good barely 25% of them involve even a minor conk on the head.
So that means in 75% of the minor accidents the helmet wasn't used, so that data is irrelevant.
Now we do analysis on the remaining 25% as our baseline. Again I bring up the sheer increase in biking population as a suggestion as to why the head injuries are going up. The population of riders doing things that may end up in a bail has dramatically in creased in the last 15 years. I would imagine much more than the percentage of injury increases.
A 10% increase in head injuries as reported from hospitals can be seen as problemcatic but factor in a higher percentage increase in ridership and that 10 percent represents a decrease in overall head injuries.