Table 1. Participant Characteristics.
| Characteristics | No. (%) | |
|---|---|---|
| Athletes without concussion (n = 54) | Athletes with concussion (n = 32) | |
| Age, mean (SD), ya | 21 (2) | 20 (2) |
| Men | 31 (57) | 20 (63) |
| Women | 23 (43) | 12 (37) |
| Racea | ||
| White | 33 (61) | 28 (88) |
| Asian | 13 (24) | 2 (6) |
| African American | 1 (2) | 2 (6) |
| Hispanic | 2 (4) | 0 |
| Otherb | 5 (9) | 0 |
| Handedness | ||
| Right | 48 (89) | 27 (84) |
| Left | 4 (7) | 4 (13) |
| Both | 2 (4) | 1 (3) |
| ADD/ADHD | 4 (7) | 3 (9) |
| Sporta | ||
| Squash | 8 (15) | 0 |
| Tennis | 14 (26) | 0 |
| Swim | 8 (15) | 0 |
| Golf | 5 (9) | 0 |
| Crew | 19 (35) | 0 |
| Football | 0 | 7 (22) |
| Cheerleading | 0 | 2 (6) |
| Hockey | 0 | 3 (9) |
| Lacrosse | 0 | 1 (3) |
| Basketball | 0 | 4 (13) |
| Soccer | 0 | 6 (19) |
| Field hockey | 0 | 2 (6) |
| Wrestling | 0 | 1 (3) |
| Ski | 0 | 1 (3) |
| Otherc | 0 | 5 (16) |
Abbreviations: ADD, attention-deficit disorder; ADHD, attention-deficit/hyperactivity disorder.
a
P < .05.
b
Other race includes American Indian or Alaska Native, Native Hawaiian or other Pacific Islander.
c
Other sports include (1 participant for each) rugby, equestrian, sailing, snowboarding, and motocross.