Table 1.
Demographic and military service‐related characteristics of genotyped Million Veteran Program enrollees with completed Baseline and Lifestyle surveys (N = 173,574)
| Factor | Frequency (%) or mean (SD) |
|---|---|
| Demographic factors | |
| Age (years) | |
| 18–29 | 1,198 (0.7) |
| 30–39 | 3,769 (2.2) |
| 40–49 | 9,321 (5.4) |
| 50–59 | 25,425 (14.6) |
| 60–69 | 74,476 (42.9) |
| 70–79 | 37,173 (21.4) |
| 80+ | 22,211 (12.8) |
| Missing | 1 (0.0) |
| Mean (SD) | 65.9 (11.7) |
| Median | 66 |
| Sex | |
| Male | 160,447 (92.4) |
| Female | 13,126 (7.6) |
| Missing | 1 (0.0) |
| Race (self‐identified) | |
| European American | 142,961 (82.4) |
| African American | 18,238 (10.5) |
| Asian | 1,123 (0.6) |
| American Indian/Native Hawaiian | 1,120 (0.6) |
| Pacific Islander | 205 (0.1) |
| Other | 3,012 (1.7) |
| Multiple races | 6,516 (3.8) |
| Missing | 399 (0.2) |
| Ethnicity (self‐identified) | |
| Hispanic | 10,598 (6.1) |
| Non‐Hispanic | 162,186 (93.4) |
| Unknown | 788 (0.5) |
| Missing | 2 (0.0) |
| Marital status | |
| Married | 104,459 (60.2) |
| Civil commitment/cohabitating | 4,896 (2.8) |
| Separated | 3,630 (2.1) |
| Divorced | 32,722 (18.9) |
| Widowed | 12,594 (7.3) |
| Never married | 13,323 (7.7) |
| Missing | 1,950 (1.1) |
| Military service‐related characteristics | |
| Military branch | |
| Army | 75,202 (43.3) |
| Navy | 34,627(19.9) |
| Air Force | 28,028 (16.1) |
| Marine Corps | 16,314 (9.4) |
| Other | 2,447 (1.4) |
| Multiple | 15,402 (8.9) |
| Missing | 1,554 (0.9) |
| Service era | |
| September 2001 or later | 3,530 (2.0) |
| August 1990 to August 2001 | 4,008 (2.3) |
| May 1975 to July 1990 | 13,255 (7.6) |
| August 1964 to April 1975 | 68,867 (39.7) |
| February 1955 to July 1964 | 15,401 (8.9) |
| July 1950 to January 1955 | 12,490 (7.2) |
| January 1947 to June 1950 | 574 (0.3) |
| December 1941 to December 1946 | 6,963 (4.0) |
| November 1941 or earlier | 154 (0.1) |
| Multiple | 48,320 (27.8) |
| Missing | 12 (0.0) |
| PCL score, mean (SD) | 30.9 (15.8) |
| PCL re‐experiencing cluster score, mean (SD) | 8.5 (4.9) |
| Deployment and combat related | |
| Deployed | |
| Yes | 107,208 (61.8) |
| No | 56,867 (32.8) |
| Missing | 9,499 (5.5) |
| Served in combat or war zone | |
| Yes | 83,097 (47.9) |
| No | 88,228 (50.8) |
| Missing | 2,249 (1.3) |
| Modified DRRI combat experiences score, mean (SD) | 27.4 (11.1) |
Note. PCL: Posttraumatic Stress Disorder Checklist: DRRI: Deployment Risk and Resilience Inventory.