title: Rankings of High School Sports Injury Rates Differ Based on Time Loss Assessments.
abstract: OBJECTIVE
  To examine how injury definition inclusiveness affects the rank order of injury rates in 27 high school (HS) sports.
  
  
  METHODS
  The National Athletic Treatment, Injury and Outcomes Network (NATION) used certified athletic trainers (ATs) to collect injury and athlete-exposure (AE) data in practices and competitions for 27 HS sports during the 2011/2012 to 2013/2014 academic years. Time loss (TL) injuries resulted in ≥24 hours of participation restriction. Nontime loss (NTL) injuries resulted in <24 hours of participation restriction.
  
  
  METHODS
  Aggregate injury and exposure data collected from 27 HS sports.
  
  
  METHODS
  High school student-athletes.
  
  
  METHODS
  Sports injury data from the National Athletic Treatment, Injury and Outcomes Network.
  
  
  METHODS
  Time loss and TL + NTL injury rates were calculated. Sport-specific rates were placed in rank order, stratified by gender.
  
  
  RESULTS
  Most of the 47 014 injuries reported were NTL (82.8%). Among boys' sports, TL injury rates were greatest in football (3.27/1000AE) and wrestling (2.43/1000AE); TL + NTL injury rates were greatest also in football (15.29/1000AE) and wrestling (11.62/1000AE). Among girls' sports, TL injury rates were greatest in soccer (1.97/1000AE) and basketball (1.76/1000AE); TL + NTL injury rates were greatest in field hockey and lacrosse (both 11.32/1000AE).
  
  
  CONCLUSIONS
  The rank order of injury rates and the resulting injury prevention priorities may depend on injury definition inclusiveness, particularly in female HS sports.
authors.affiliation: *Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC; †Department of Kinesiology, California State University at Long Beach, Long Beach, CA; ‡Datalys Center for Sports Injury Research and Prevention, Indianapolis, IN; and §Injury Prevention Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC.
authors.forename: Zachary Y
authors.initials: ZY
authors.lastname: Kerr
authors.forename: Karen G
authors.initials: KG
authors.lastname: Roos
authors.forename: Aristarque
authors.initials: A
authors.lastname: Djoko
authors.forename: Thomas P
authors.initials: TP
authors.lastname: Dompier
authors.forename: Stephen W
authors.initials: SW
authors.lastname: Marshall
mesh_terms: D000293:Adolescent; D056352:Athletes; D001265:Athletic Injuries / Q000453:epidemiology*; D001490:Basketball / Q000293:injuries; D005260:Female; D005538:Football / Q000293:injuries; D006688:Hockey / Q000293:injuries; D006801:Humans; D008297:Male; D012916:Soccer / Q000293:injuries; D014481:United States; D014952:Wrestling / Q000293:injuries; D000067009:Youth Sports / Q000293:injuries*