Table 1.
Demographic and Injury History Characteristics of the Sport Groupsa
| Variable |
Sport Group |
P Value |
Effect Size (95% Confidence Interval) |
|
| Collision or Contact (n = 143) |
No or Limited Contact (n = 138) |
|||
| Female athletes | 34 (24%) | 91 (66%) | <.001 | |
| Male athletes | 109 (76%) | 47 (34%) | ||
| Age, yb | 15.2 (14.3, 16.0) | 15.3 (14.5, 16.6) | .18 | 0.21 (−0.02, 0.45) |
| Age group | 13–15 y: 66 (46%) | 13–15 y: 59 (43%) | .63 | |
| 16–18 y: 77 (54%) | 16–18 y: 79 (57%) | |||
| Height, cm | 170.7 (14.6) | 167.9 (8.2) | .05 | 0.24 (0.00, 0.47) |
| Weight, kg | 64.6 (17.1) | 63.2 (15.0) | .46 | 0.09 (−0.15, 0.32) |
| Average time training, h/wk | 11.6 (4.9) | 11.7 (5.0) | .85 | 0.02 (−0.23, 0.28) |
| Varsity athlete | 52 (36%) | 43 (31%) | .36 | |
| History of bone, muscle, ligament, or tendon injury | 73 (51%) | 40 (29%) | <.001 | |
| History of acute fracture or dislocation | 65 (46%) | 35 (26%) | <.001 | |
| History of stress fracture | 12 (9%) | 7 (5%) | .26 | |
| History of diagnosed concussion | 35 (25%) | 27 (20%) | .29 | |
| Organized sport(s) played in the past yearc | Basketball: 42 Cheerleading: 6 Diving: 2 Extreme sports: 1 Football: 74 Gymnastics: 10 Lacrosse: 10 Martial arts: 10 Rugby: 1 Soccer: 29 Water polo: 1 Wrestling: 12 |
Baseball: 7 Cross-country: 20 Dance: 5 Football (flag/touch): 2 Golf: 7 Horseback riding: 1 Marching band: 4 Poms: 17 Racquetball: 1 Softball: 14 Swimming: 13 Tennis: 10 Track & field: 28 Volleyball: 15 |
||
| Lifetime years playing collision and contact sports | 7.8 ± 3.6 | 4.6 ± 3.2 | <.001 | 0.93 (0.57, 1.30) |
a
Continuous variables are presented as mean ± SD; categorical variables are presented as the number included in each group (%).
b
Data presented as median (interquartile range).
c
Participants selected all organized sports they played in the past year, so the total n sums to >100%.