Unreported Concussion in High School Football Players

To investigate the frequency of unreported concussion and estimate more accurately the overall rate of concussion in high school football players.

Retrospective, confidential survey completed by all subjects at the end of the football season. SETTING AND PARTICIPANTS: A total of 1,532 varsity football players from 20 high schools in the Milwaukee, Wisconsin, area were surveyed. MAIN OUTCOME MEASUREMENTS: The structured survey assessed (1) number of concussions before the current season, (2) number of concussions sustained during the current season, (3) whether concussion during the current season was reported, (4) to whom concussion was reported, and (5) reasons for not reporting concussion.