To the Editor As the authors of a recent study of concussion in youth football (aged 8-12 years), we know all too well the challenges of conducting research in this population.1 O’Kane and colleagues2 are to be commended for conducting research on concussion in youth female soccer players in a recent issue of JAMA Pediatrics, as we know little about this at-risk population and, in particular, girls. However, we have several concerns regarding the reported results and the nature of the methods used in this study.
Kontos AP, Elbin RJ, Covassin T. Concerns About Concussion Rates in Female Youth Soccer. JAMA Pediatr. 2014;168(10):967-968. doi:10.1001/jamapediatrics.2014.777