Trends in United States High School Soccer Concussion Reporting from 2012–2017
Abstract Purpose The purpose of this study was to provide updated high school soccer concussion incidence rates by gender and event type. It was hypothesized more soccer injuries occur in females, during games, and that females would have higher injury rates and risk. Methods This study used data from the Rank One Health Injury Surveillance Database (ROH ISD) between 2012–17, from 1,999 high schools in student-athletes ages 14 to 18. This study examined high school soccer concussion incidence rate reporting by Athletic Trainers (ATCs). Injury rates per 1,000 Athletic Exposures, injury rate ratios (IRRs), and risk ratios (RR) were calculated by event type. All 95% confidence intervals (CIs) not containing 1.0 were considered statistically significant. Results A total of 6,669 concussions with an average age of 15.62 (SD=1.26) were reported by ATCs in high school soccer from 2012-17. More concussions occurred in games (4,527; 67.9%) than practices (2,142; 32.1%). During games, males (3.49/1,000 AEs) had lower rates than females (7.78/1,000 AEs). During practice, males (0.52/1,000 AEs) had lower rates than females (0/97/1,000 AEs). Injury risk ratio was higher in games than practices for males (RR=6.71; 95% CI=6.67, 6.75) and females (RR=8.11; 95% CI=8.08, 8.14). Conclusion This study marks the largest epidemiological high school soccer concussion incidence investigation to date. The findings from this study provide updated high school soccer concussion incidence rates and provide further evidence of differences in injury rates when comparing practices and games.