Originally Posted by I-Like-To-Bike

One, how is a head injury categorized as "serious"; what kind of head injuries are not considered "serious" for the purpose of these studies? Is every report of head contact with the ground considered "serious" because there might be a possible concussion?

Two, are neck, jaw, dental and other injuries (not mitigated by helmet use) considered "serious head injuries" in these ER studies?

Three, do these ER stats provide any credible info to draw a conclusion about the effectiveness of helmet use in mitigating the seriousness of head injuries?

I suspect the agenda of helmet promoters behind inflated rhetoric/hype about the actual frequency, percentage and number of "serious head injuries" to bicyclists (with or without helmets), especially serious head injury in the absence of any other equally serious (or fatal) injuries suffered by cyclists in accidents serious enough to create catastrophic injuries.