Table 1.
Demographic characteristics of study participants.
| Unexposed Control (N = 14) |
Experienced Breacher (N = 15) | Significance | |
|---|---|---|---|
| Age, mean (SD) | 38.86 (7.81) | 41.60 (8.42) | t = 0.907, p = 0.372 |
| Sex (Male), N (%) | 14 (100) | 15 (100) | N/A |
| Race, N (%) | |||
| White | 12 (85.7) | 13 (86.7) | χ2 = 2.008, p = 0.571 |
| Black | 1 (7.1) | 0 (0.0) | |
| Asian | 1 (7.1) | 1 (6.7) | |
| American Indian/Alaskan | 0 (0) | 1 (6.7) | |
| Ethnicity (Non-Hispanic), N (%) | 13 (92.9) | 15 (100) | χ2 = 1.110, p = 0.483 |
| Type of Service, N (%) | |||
| Military | 10 (71.4) | 10 (66.7) | N/A |
| Civilian Law Enforcement | 4 (28.6) | 5 (33.3) | |
| Duration of service, mean (SD) | 13.71 (7.12) | 18.40 (6.82) | t = −1.809, p = 0.082 |
| Total blast exposures, mean (SD) | 5.86 (10.42) | 5659.20 (9649.52) | t = −2.269, p = 0.040 |
| Breaches in career, N (%) | |||
| 0 | 13 (92.9) | 0 (0.0) | N/A |
| 10–39 | 1 (7.1) | 0 (0.0) | |
| 100–199 | 0 (0.0) | 1 (6.7) | |
| 200–399 | 0 (0.0) | 1 (6.7) | |
| 400+ | 0 (0.0) | 13 (86.7) | |
| Breaches in past year, N (%) | |||
| 0 | 14 (100) | 2 (13.3) | N/A |
| 1–9 | 0 (0.0) | 2 (13.3) | |
| 10–39 | 0 (0.0) | 1 (6.7) | |
| 40–99 | 0 (0.0) | 1 (6.7) | |
| 100–199 | 0 (0.0) | 3 (20.0) | |
| 200–399 | 0 (0.0) | 3 (20.0) | |
| 400+ | 0 (0.0) | 3 (20.0) |
N/A: Not Applicable.