Table 1.
Demographic data. Abbreviations: TBI, traumatic brain injury; PTSD, posttraumatic stress disorder; SD, standard deviation. The significance is evaluated across four groups when the data of four groups are available, between TBI and TBI-PTSD groups when the data of these two groups only are available.
| Characteristic | TBI | PTSD | PTSD+TBI | Control | P value |
|---|---|---|---|---|---|
| Age, mean (SD), y | 32.24 (7.65) | 32.54 (5.97) | 33.82 (7.95) | 31.58(7.33) | 0.159 |
| Female, No. (%) | 3 (3.85%) | 5 (8.20%) | 3 (6.82%) | 8 (10.81%) | 0.411 |
| Race, No. (%) | 0.398 | ||||
| White | 40 (51.95%) | 32 (53.33%) | 20 (45.45%) | 41 (55.41%) | |
| African American | 5 (6.49%) | 8 (13.33%) | 8 (18.18%) | 11 (14.86) | |
| Native American or Hawaiian | 0 (0%) | 0 (0%) | 0 (0%) | 1 (1.35%) | |
| Asian | 5 (6.49%) | 6 (10.0%) | 1 (2.27%) | 9 (12.16) | |
| Hispanic | 19 (24.68%) | 11 (18.33%) | 11 (25%) | 9 (12.16) | |
| Others | 8 (10.39%) | 3 (5.0%) | 4 (9.09%) | 3 (4.05%) | |
| Time since last deploy. (months), mean (sd) | 27.78 (30.97) | 32.63 (38.61) | 43.01 (45.54) | 26.85 (39.60) | 0.136 |
| TBI group characteristics, mean (sd) | |||||
| CSI current score | 4.22 (7.94) | 6.81 (11.82) | 11.10 (12.39) | 0.74 (1.82) | 0.0013 |
| CSI lifetime score | 13.32 (13.48) | 13.27 (14.30) | 24.39 (19.84) | 5.42 (6.67) | 0.0007 |
| Loss of consciousness, minutes median | 0.75 | 0.75 | 0.900 | ||
| Time since last event, months mean (sd) | 75.62 (70.28) | 74.05 (46.31) | 0.507 |