Table 1.

Number of Studies Based on Method of Data Collection ^a

Method of Data Collection	No. of Studies	References
Surveillance programs (NHL ISS, NCAA ISP, and CAIRS)	23	1, 2, 11 -13, 18 -21, 27, 32, 33, 40, 41, 46, 52, 55, 57, 59, 66, 73, 81, 93
League data	21	3, 4, 15, 23, 34, 38, 42, 45, 47, 54, 60 -62, 64, 67, 68, 74, 75, 82, 85, 90, 91
Individual team data	18	9, 22, 24, 25, 30, 35, 37, 48, 50, 51, 56, 65, 71, 79, 80, 84, 87
Institutional data	15	7, 10, 26, 28, 29, 31, 36, 43, 44, 53, 69, 70, 88, 89, 92
Internet	7	5, 14, 16, 49, 58, 78, 83
Literature review	4	6, 17, 63, 72
Olympic data	4	39, 76, 77, 86

^a CAIRS, Canadian Athletic Injuries/Illness Reporting System; NCAA ISP, National Collegiate Athletic Association Injury Surveillance Program; NHL ISS, National Hockey League Injury Surveillance System.