['To determine why athletes decide not to seek medical attention during a game or practice when they believe they have suffered a concussion.', 'A retrospective survey.', 'University Sport Medicine Clinic.', 'A total of 469 male and female university athletes from several varsity team sports were participated in the study.', 'Athletes were surveyed about the previous 12 months to identify specific reasons why those athletes who believed they had suffered a concussion during a game or practice decided not to seek attention at that time, how often these reasons occurred, and how important these reasons were in the decision process.', 'Ninety-two of the 469 athletes (19.6%) believed they had suffered a concussion within the previous 12 months while playing their respective sport, and 72 of these 92 athletes (78.3%) did not seek medical attention during the game or practice at least once during that time. Sports in which athletes were more likely to not reveal their concussion symptoms were football and ice hockey. The reason "Did not feel the concussion was serious/severe and felt you could still continue to play with little danger to yourself," was listed most commonly (55/92) as a cause for not seeking medical attention for a presumed concussion.'] Choose why university athletes to reveal their concussion symptoms during a practice or game?