Progression through return-to-sport and return-to-academics guidelines for concussion management and recovery in collegiate student athletes: findings from the Ivy League-Big Ten Epidemiology of Concussion Study.

"results were similar when using return to full sport <=21 days as the outcome as a sensitivity analysis ( table 2b and e online supplemental table 1 online supplemental figure s2 ) 10 1136/bjsports-2021-104451 supp3 supplementary data 10 1136/bjsports-2021-104451 supp2 supplementary data having 24-48 hours initial physical and cognitive rest was associated with a higher likelihood that return to full sport would be prolonged >28 days (ard 12 9% 95% ci 8 3% to 17 6%) ( table 2f ) and initiating academics4+ days prior to symptom resolution was associated with a higher likelihood of prolonged delay to full sport (ard 19 1% 95% ci 13 4% to 24 7%) ( table 2f )."

"Competing interests: This research was conducted as an activity of the Ivy League–Big Ten Epidemiology of Concussion Study, which is an initiative of the Big Ten–Ivy League Traumatic Brain Injury Research Collaboration. DJW is Principal Investigator of the Concussion Study, BAD is a PhD student, and ACB is a postdoctoral fellow involved with study management and research. Ivy League and Big Ten University and Conference leadership played no role in approving, interpreting, or permitting the present analysis to be conducted or published. DJW has consulted for the National Collegiate Athletic Association (NCAA)."

"Funding: The study was funded by the Presidents of the Ivy League Universities and the Big Ten Athletic Conference. DJW and ACB received receive salary support from the study and also from the Penn Injury Science Center at the University of Pennsylvania through a grant from the Centers for Disease Control and Prevention (R49CE003083). ACB is also supported by the NIH NHLBI Training Program in Respiratory Neurobiology and Sleep (T32HL007713) and the NIH NINDS Brain Injury Training Grant (T32NS043126). The Big Ten Academic Alliance contributes support for coordinating study activities."