Table 1.
Demographics of the study cohort1 and those with a recent mental health disorder diagnosis2
| Study cohort | Subjects with a recent mental health disorder diagnosis | |||
| Number | (Percentage) | Number | (Percentage) | |
| Total | 15195 | (100) | 615 | (100) |
| Gender | ||||
| Male | 13816 | (90.9) | 506 | (82.3) |
| Female | 1379 | (9.1) | 109 | (17.7) |
| Prior deployments | ||||
| 0 | 10180 | (67.0) | 362 | (58.9) |
| 1+ | 5015 | (33.0) | 253 | (41.1) |
| Military occupation | ||||
| Combat | 3810 | (25.1) | 125 | (20.3) |
| Non-combat | 11385 | (74.9) | 490 | (79.7) |
| Age | ||||
| 18-19 | 503 | (3.3) | 22 | (3.6) |
| 20-29 | 9558 | (62.9) | 396 | (64.4) |
| 30-39 | 3737 | (24.6) | 151 | (24.6) |
| 40-49 | 1255 | (8.3) | 45 | (7.3) |
| 50+ | 142 | (0.9) | 1 | (0.2) |
Note: Significant difference by gender (P < 0.001), prior deployment (P < 0.001), and military occupation (P = 0.006) by Chi-square.
1. Demographic characteristics as of the deployment date.
2. Record of one or more pertinent ICD-9CM diagnosis codes in the full year prior to date of deployment.