I agree that they would likely be higher for bikers without helments; I guess I misunderstood what the study was about, but my point was that if you relied on s

I agree that they would likely be higher for bikers without helments; I guess I misunderstood what the study was about, but my point was that if you relied on self-reporting for the number of fatalities, nobody would be able to report that they died for obvious reasons.