Table 3.
Group comparisons for phase of injury.
| Post-acute group mean (sd) n = 18 |
Chronic group mean (sd) n = 19 |
F or χ2 | p | |
|---|---|---|---|---|
| Age | 33.11 (1.71) | 33.63 (4.79) | 0.07 | 0.80 |
| Gender (% male)^ | 83.3% | 94.7% | 1.29 | 0.26 |
| Ethnicity^ | 2.74 | 0.34 | ||
| Caucasian | 33.8% | 36.8% | ||
| African-American | 5.6% | 10.5% | ||
| Hispanic | 33.3% | 42.1% | ||
| Asian | 22.2% | 10.5% | ||
| Native American | 5.6% | 0% | ||
| Combat exposure scale | 13.96 (11.97) | 18.38 (12.09) | 1.25 | 0.27 |
| PCL-M total score | 51.28 (16.92) | 44.07 (19.41) | 1.44 | 0.24 |
| BDI-II total score | 24.44 (12.11) | 18.01 (12.39) | 2.55 | 0.12 |
| NSI total score | 42.30 (18.47) | 32.11 (18.51) | 2.86 | 0.10 |
| Months since injury (months) | 39.28 (15.97) | 97.26 (30.57) | 51.39 | < 0.001 |
| Total # of TBIs | 2.89 (1.56) | 2.79 (1.43) | 0.04 | 0.84 |
| TBI Severity (% mild)^ | 88.9% | 73.7% | 1.44 | 0.23 |
| % most significant TBI with LOC | 55.6% | 73.7% | 1.34 | 0.25 |
| Blast-exposed (% yes) | 44.4% | 52.6% | 0.25 | 0.62 |
| Pulse pressure (n = 18, n = 18) | 46.22 (7.34) | 45.08 (9.31) | 0.17 | 0.69 |
| Height | 67.75 (3.93) | 68.11 (2.70) | 0.75 | 0.75 |
| Weight | 191.78 (48.92) | 194.28 (43.37) | 0.87 | 0.87 |
| Current smoker (% yes)^ | 17% | 16% | 0.23 | 0.24 |
| APOE-ε4 genotype (% yes) | 35% | 28% | 0.63 | 0.63 |
^Likelihood ratio; PCL-M = posttraumatic stress disorder checklist; BDI-II = Beck depression inventory 2nd edition; NSI = neurobehavioral symptom inventory; APOE-ε4 = apolipoprotein-ε4 carrier.