Table 2.
Subject Characteristics
| Characteristic | All subjects (n = 30) | Subjects undergoing DTI (n = 15) |
|---|---|---|
| Age, mean years (SD) | 19.5 (1.2) | 19.3 (1.3) |
| Sex, n male (%) | 30 (100) | 15 (100) |
| Race, n (%) | ||
| Black/AAa | 3 (10) | 0 |
| White | 24 (80) | 14 (93.3) |
| White + Asian or Black/AAa | 2(6.7) | 1 (6.7) |
| Other | 1 (3.3) | 0 |
| Ethnicity, n (%) | ||
| Hispanic/Latino | 0 | 0 |
| Not Hispanic/Latino | 30 (100) | 15 (100) |
| BMI, mean kg/m2 (SD) | 29.39 (5.0) | 28.48 (4.8) |
| Player position, n (%) | ||
| Center | 1 (3.3) | 1 (6.7) |
| Defensive back | 6 (20) | 2 (13.3) |
| Defensive line | 7 (23.3) | 3 (20) |
| Line backer | 7 (23.3) | 3 (20) |
| Offensive line | 4 (13.3) | 2 (13.3) |
| Running back | 2 (6.7) | 1 (6.7) |
| Tight end | 1 (3.3) | 1 (6.7) |
| Wide receiver | 2 (6.7) | 2 (13.3) |
| Number of prior concussionsb, n (%) | ||
| 0 | 18 (60) | 10 (66.7) |
| 1 | 7 (23.3) | 4 (26.7) |
| 2 | 3 (10) | 1 (6.7) |
| 3 | 2 (6.7) | 0 |
| > 3 | 0 | 0 |
a
AA, African American; b> 1 month before study.
DTI, diffusion tensor imaging; SD, standard deviation; BMI, body mass index.