Table 3.
Weighted Relative Risk of Injury Severity among Male Veterans Compared with Civiliansa
| Severity | N | Veteran | Civilian | Relative risk (95% CI) |
|---|---|---|---|---|
| Lifetime history of head/neck injury (Ref: no injury of any kind) | ||||
| Any injury NTI or TBI | 599 | 71.1 | 58.4 | 1.76 (1.75-1.77) |
| NTI only (single or repetitive)b | 374 | 54.7 | 23.6 | 3.92 (3.90-3.95) |
| TBI | 474 | 55.6 | 52.3 | 1.15 (1.14-1.15) |
| NTI and TBI | 599 | 15.3 | 14.1 | 1.11 (1.10-1.11) |
| Lifetime history of TBI (Ref: no TBI; Ref category includes respondents with NTI) | 599 | 36.2 | 45.5 | 0.68 (0.675-0.682) |
| Frequency | ||||
| Lifetime history of head/neck injury (Ref: no head/neck injury of any kind) | ||||
| Multiple NTI onlyb | 374 | 22.5 | 8.8 | 3.01 (2.98-3.04) |
| 1 TBI onlyc | 383 | 40.9 | 35.7 | 1.23 (1.23-1.25) |
| >1 TBId | 340 | 36.1 | 35.0 | 1.05 (1.04-1.06) |
P < 0.001 for all comparisons.
Percentages and relative risks are based on weighted data.
a
Reference = civilian; bTBI group excluded; cNTI and >1 TBI groups excluded; dNTI and single TBI groups excluded.
CI, confidence interval; NTI, non-TBI head/neck injury; TBI, traumatic brain injury.