Table 3. Sample Demographics and Clinical Variables.
| Demographic Variables | N | Mean or n | SD or % |
|---|---|---|---|
| Age in years | 103 | 42.6 | 18.0 |
| Education level in years | 103 | 12.9 | 2.9 |
| Male gender | 103 | 64 | 62.1% |
| Married or presence of partner prior to TBI | 103 | 56 | 54.4% |
| Annual income>$20K | 103 | 58 | 56.3% |
| Caucasian race | 103 | 53 | 51.5% |
|
| |||
| Clinical Variables | N | Mean or n | SD or % |
|
| |||
| Family history of non-mood psychiatric disorder | 102 | 28 | 27.4% |
| Any depression prior to TBI | 103 | 18 | 17.5% |
| Any axis-I psychiatric diagnosis prior to TBI | 103 | 76 | 73.4% |
| Type of injury | 99 | ||
| MVA | 57 | 57.6% | |
| Fall | 20 | 20.2% | |
| Assault | 21 | 21.2% | |
| Other | 1 | 1.0% | |
| Severity | 100 | ||
| Mild | 61 | 61% | |
| Moderate & Severe | 39 | 39% | |
| SFE pre-TBI score | 99 | 0.22 | 0.15 |
| STC pre-TBI score | 99 | 3.36 | 1.77 |
| HAM-D pre-TBI score | 95 | 2.26 | 4.22 |
SFE= Social Functioning Exam; STC= Social Ties Checklist; HAM-D= Hamilton Depression Scale;TBI= traumatic brain injury; MVA= motor vehicle accident