Received: 22 January 2020
Accepted: 24 March 2020
First Online: 18 May 2020
Ethics approval and consent to participate
: The institutional review boards at Nationwide Children’s Hospital and the Colorado Multiple Institutional Review Board approved the High School Reporting Information Online (High School RIO) surveillance study which captured the data analyzed in this study. In this retrospective cohort study all analyses were performed on a pre-existing de-identified dataset captured by a national high school sports injury surveillance study, thus there was no consent to participate.
: The authors declare that they have no competing interests.