Table 1

Study demographics

Study demographics
Total number (%)
Age (years)
 13–15483 (36)
 16–20838 (63)
 21–2415 (<1)
 Not documented3 (<1)
 Total1339
Race
 Caucasian911 (68)
 Asian/Pacific Islander243 (18)
 African-American230 (17)
 Hispanic/Latino113 (8)
 Native American36 (3)
 Other8 (0.6)
Gender
 Male661 (49)
 Female678 (51)
Physical activity/week
 >10 h454 (35)
 5–10 h444 (34)
 2–5 h284 (22)
 <2 h120 (9)
Organised sports team
 High school860 (64)
 Club/select level308 (23)
 Recreational level250 (19)
 Professional6 (0.5)
 College4 (0.3)
 Total1071 (80)