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. Author manuscript; available in PMC: 2015 Mar 26.
Published in final edited form as: Br J Sports Med. 2014 Jun 19;48(15):1172–1178. doi: 10.1136/bjsports-2014-093840

Table 1.

Study demographics

Study demographics
Total number (%)
Age (years)
    13-15 483 (36)
    16-20 838 (63)
    21-24 15 (<1)
    Not documented 3 (<1)
    Total 1339
Race
    Caucasian 911 (68)
    Asian/Pacific Islander 243 (18)
    African-American 230 (17)
    Hispanic/Latino 113 (8)
    Native American 36 (3)
    Other 8 (0.6)
Gender
    Male 661 (49)
    Female 678 (51)
Physical activity/week
    >10h 454 (35)
    5-10h 444 (34)
    2-5 h 284 (22)
    <2 h 120 (9)
Organised sports team
    High school 860 (64)
    Club/select level 308 (23)
    Recreational level 250 (19)
    Professional 6 (0.5)
    College 4 (0.3)
    Total 1071 (80)