Table 2

 Different definitions of injury and methods of data collection in the 34 selected studies

YearStudyInjury classificationC onlyC & TAbsence C or TCheck by doctor & PTCheck by authorQuestionnaire/
 >formVideo
C, Competition; T, training; PT, physiotherapist; NCAA, National Collegiate Athletic Association.
1978Nilsson48––––✓–––
1978McMaster47––✓–––––
1980Sullivan14––✓✓––––
1983Ekstrand32Minor, moderate, major–✓✓✓–––
1985Schmidt-Olsen34Slight, moderate, severe✓––✓–––
1986Hoff42––✓✓––✓–
1989Nielsen15––✓✓✓–✓–
1990Ekstrand49––✓✓✓–––
1990Yde11<2 weeks, >2 weeks, >4 weeks, >6 weeks, >12 weeks–✓✓––––
1991Engstrom50Minor, moderate, major–✓✓✓✓––
1993NCAA3––✓✓––––
1993Kibler51–✓––––✓–
1994NCAA4––✓✓––––
1996Arnason40<1 week, 1–2 weeks, 2–4 weeks, >4 weeks–✓✓✓–––
1996Inklaar52–✓––✓✓✓–
1996Luthje43Minor, moderate, major–✓–✓–––
1997NCAA53––✓✓––––
1998Hawkins54Non-injury, minor, moderate––––––✓
1999Hawkins7Slight, minor, moderate, major–✓✓✓–✓–
1999Yund39––✓–✓–––
2000Junge55Mild, moderate, severe–✓✓✓–✓–
2000Peterson56Mild, moderate, severe–✓✓✓–✓–
2001Soderman26Minor, moderate, major––✓–✓✓–
2001Morgan29Minor, moderate, major–✓✓✓–✓–
2001Steven31–✓––✓–✓–
2001Hawkin8Slight, minor, moderate, major–✓✓––✓–
2002Kirkendall57–✓–✓––✓–
2002Rahnama58Minor, moderate, high✓–––––✓
2003Giza59Trivial, slight, minor, moderate, major✓–✓✓–✓✓
2003Kakavelakis28Minor, moderate, major–✓✓✓–✓–
2004Junge600 day, 1–7 days, 8–21 days, >21 days–✓✓✓–✓–
2004Junge62–✓––✓–✓–
2004Junge61–✓––✓–✓–
2004Yoon630 day, 1–3 days, 4–7 days, 8–30 days, >30 days✓–✓✓–✓–