Table 1.
Characteristics of the post-9/11 veteran sample with deployment-related mild traumatic brain injury (mTBI) by comorbidity burden.
| N (%) | Comorbidity burden * |
Total sample N = 92,495 |
|||
|---|---|---|---|---|---|
| None 7,664 (8.29) | One 22,894 (24.75) | Two 34,746 (37.57) | Three 27,191 (29.40) | ||
| Polypharmacy | 183 (2.39) | 2,419 (10.57) | 9,857 (28.37) | 13,536 (49.78) | 25,995 (28.10) |
| Age | |||||
| 19–29 | 4,191 (54.68) | 12,519 (54.68) | 17,631 (50.74) | 12,033 (44.25) | 46,374 (50.14) |
| 30–39 | 1,951 (25.46) | 6,287 (27.46) | 10,846 (31.22) | 9,431 (34.68) | 28,515 (30.83) |
| 40–49 | 1,157 (15.10) | 3,205 (14.00) | 5,004 (14.40) | 4,686 (17.23) | 14,052 (15.19) |
| 50+ | 365 (4.76) | 883 (3.86) | 1,265 (3.64) | 1,041 (3.83) | 3,554 (3.84) |
| Sex (F) | 241 (3.14) | 933 (4.08) | 1,681 (4.84) | 2,228 (8.19) | 5,083 (5.50) |
| Race/ethnicity | |||||
| White | 5,203 (67.89) | 15,269 (66.69) | 22,119 (63.66) | 16,028 (58.95) | 58,619 (63.38) |
| Asian American/Pacific Islander | 562 (7.33) | 1,851 (8.09) | 3,465 (9.97) | 3,196 (11.75) | 9,074 (9.81) |
| Black Hispanic | 34 (0.44) | 90 (0.39) | 113 (0.33) | 135 (0.50) | 372 (0.40) |
| Black non-Hispanic | 951 (12.41) | 2,838 (12.40) | 4,748 (13.66) | 4,323 (15.90) | 12,860 (13.90) |
| Hispanic | 767 (10.01) | 2,325 (10.16) | 3,514 (10.11) | 2,860 (10.52) | 9,466 (10.23) |
| Native American | 130 (1.70) | 460 (2.01) | 715 (2.06) | 608 (2.24) | 1,913 (2.07) |
| Unknown | 17 (0.22) | 61 (0.27) | 72 (0.21) | 41 (0.15) | 191 (0.21) |
| Marital status | |||||
| Married/partnered | 3,564 (46.50) | 11,440 (49.97) | 17,796 (51.22) | 15,186 (55.85) | 47,986 (51.88) |
| Divorced/separated/widowed | 1,446 (18.87) | 4,691 (20.49) | 8,129 (23.40) | 6,799 (25.00) | 21,065 (22.77) |
| Single, never married | 2,638 (34.42) | 6,713 (29.32) | 8,761 (25.21) | 5,149 (18.94) | 23,261 (25.15) |
| Unknown | 16 (0.21) | 50 (0.22) | 60 (0.17) | 57 (0.21) | 183 (0.20) |
| Education | |||||
| High school or equivalent | 4,486 (58.53) | 13,723 (59.94) | 21,314 (61.34) | 16,149 (59.39) | 55,672 (60.19) |
| College grad/post graduate | 563 (7.35) | 1,396 (6.10) | 1,884 (5.42) | 1,591 (5.85) | 5,434 (5.87) |
| Less than high school | 108 (1.41) | 291 (1.27) | 491 (1.41) | 383 (1.41) | 1,273 (1.38) |
| Some college | 2,405 (31.38) | 7,052 (30.80) | 10,285 (29.60) | 8,424 (20.98) | 28,166 (30.45) |
| Unknown | 102 (1.33) | 432 (1.89) | 772 (2.22) | 644 (2.37) | 1,950 (2.11) |
| Military branch | |||||
| Army | 5,170 (67.46) | 15,671 (68.45) | 25,191 (72.50) | 20,657 (75.97) | 66,689 (72.10) |
| Air force | 251 (4.58) | 935 (4.08) | 1,352 (3.89) | 1,042 (3.83) | 3,680 (3.98) |
| Marine corps | 1,534 (20.02) | 4,706 (20.56) | 6,311 (18.16) | 4,127 (15.18) | 16,678 (18.03) |
| Navy/coast guard | 609 (7.95) | 1,582 (6.91) | 1,892 (5.45) | 1,365 (5.02) | 5,448 (5.89) |
| Military component | |||||
| Active | 2,694 (35.15) | 8,592 (37.53) | 14,929 (42.97) | 14,293 (52.57) | 40,508 (43.79) |
| Guard | 1,421 (18.54) | 3,955 (17.28) | 6,035 (17.37) | 4,454 (16.38) | 15,865 (17.15) |
| Reserve | 3,549 (46.31) | 10,347 (45.20) | 13,782 (39.66) | 8,444 (31.05) | 36,122 (39.05) |
| Military rank (enlisted) | 7,235 (94.40) | 21,926 (95.77) | 33,525 (96.49) | 26,144 (96.15) | 88,830 (96.04) |
mild traumatic brain injury, mTBI; central nervous system, CNS.
*
The comorbidity burden value is defined as “none” for those with no history of PTSD, depression, or headache, but otherwise equal to the count of these three diagnoses.