Risk factors for concussive symptoms 1 week or longer in high school athletes

Research Type: 
Concussion Literature

Summary:  Risk factors for concussive symptoms ≥1 week are identifiable and can potentially be used to design evidence-based return-to-play guidelines. In a cohort of 1,412 high school athletes registered in a concussion database, presenting with four or more symptoms was associated with double the risk for concussive symptoms ≥1 week. History of prior concussion was associated with double the risk for concussive symptoms ≥1 week in football players only. Several symptoms were associated with concussive symptoms ≥1 week in all athletes: drowsiness, nausea and concentration difficulties. Sensitivity to light and noise was associated with concussive symptoms ≥1 week in non-football players only. Amnesia was associated with concussive symptoms ≥1 week in males, but not females. Loss of consciousness was not a significant independent risk factor for prolonged symptoms (Note: this contrasts with McCrea, et al findings in 570 athletes where there was a 4-fold greater likelihood of prolonged recovery associated with LOC – see October 2012 lit review).

Citation:  Chrisman, SP, Rivara, FP, Schiff, MA, Zhou, C and Comstock, RD. 2013. Risk factors for concussive symptoms 1 week or longer in high school athletes. Brain Inj 27(1):1-9.
Publication Date: 
2013