Table 2.
Hazard Ratios for Selected Autoimmune Diseases By History of PTSD, 2001–2015
| All service members | Men | Women | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cases | IRa | HRb | 95% CI | Cases | IRa | HRb | 95% CI | Cases | IRa | HRb | 95% CI | |
| Any autoimmune disease | ||||||||||||
| No PTSD | 755 | 1.3 | 1.0 | Referent | 417 | 1.0 | 1.0 | Referent | 338 | 2.2 | 1.0 | Referent |
| PTSD | 109 | 2.3 | 1.6 | 1.2, 2.0 | 56 | 1.7 | 1.4 | 0.9, 2.0 | 53 | 3.5 | 1.7 | 1.2, 2.4 |
| Rheumatoid arthritis | ||||||||||||
| No PTSD | 267 | 0.5 | 1.0 | Referent | 130 | 0.3 | 1.0 | Referent | 137 | 0.9 | 1.0 | Referent |
| PTSD | 42 | 0.9 | 1.4 | 0.9, 2.1 | 21 | 0.7 | 1.4 | 0.8, 2.5 | 21 | 1.4 | 1.4 | 0.8, 2.3 |
| Systemic lupus erythematosus | ||||||||||||
| No PTSD | 91 | 0.2 | 1.0 | Referent | 21 | 0.05 | 1.0 | Referent | 70 | 0.5 | 1.0 | Referent |
| PTSD | 12 | 0.3 | 1.4 | 0.7, 2.8 | 3 | 0.09 | 1.3 | 0.3, 6.0 | 9 | 0.6 | 1.4 | 0.6, 3.0 |
| Multiple sclerosis | ||||||||||||
| No PTSD | 127 | 0.2 | 1.0 | Referent | 56 | 0.1 | 1.0 | Referent | 71 | 0.5 | 1.0 | Referent |
| PTSD | 24 | 0.5 | 2.3 | 1.3, 3.9 | 16 | 0.5 | 3.5 | 1.7, 7.3 | 8 | 0.5 | 1.3 | 0.6, 3.0 |
| Inflammatory bowel disease | ||||||||||||
| No PTSD | 296 | 0.5 | 1.0 | Referent | 214 | 0.5 | 1.0 | Referent | 82 | 0.5 | 1.0 | Referent |
| PTSD | 36 | 0.8 | 1.6 | 1.0, 2.4 | 19 | 0.6 | 1.0 | 0.6, 1.7 | 17 | 1.1 | 3.2 | 1.7, 5.9 |
aRate per 1000 person-years
bAdjusted for age, sex, enrollment panel, race/ethnicity, pay grade, service branch, and history of another mental health condition