Very small sample. It would only take 10-15 misreports to totally change the results.
In the paper there is one line saying they are relying on helmets being reported in every case. Which can be translated as, there are probably a bunch of deaths where they didn't report the helmet (possibly because of lack of head injury) and we've assumed they didn't wear one.
I'd be interested to know what percentage of the helmeted riders died from neck injuries as this has previously been shown to increase in helmeted riders.
Finally something I thought interesting is that only helmeted riders died hitting other cyclists and pedestrians!?
Very small sample. It would only take 10-15 misreports to totally change the results.
In the paper there is one line saying they are relying on helmets being reported in every case. Which can be translated as, there are probably a bunch of deaths where they didn't report the helmet (possibly because of lack of head injury) and we've assumed they didn't wear one.
I'd be interested to know what percentage of the helmeted riders died from neck injuries as this has previously been shown to increase in helmeted riders.
Finally something I thought interesting is that only helmeted riders died hitting other cyclists and pedestrians!?