Table 1.
Baseline demographic and behavioural characteristics by deployment status of 50 128 millennium cohort members. Values are numbers (percentages)
| Characteristic* | Deployed† (n=11 952) | Non-deployed† (n=38 176) |
|---|---|---|
| Sex | ||
| Male | 9727 (81.4) | 26 552 (69.6) |
| Female | 2225 (18.6) | 11 624 (30.4) |
| Birth year | ||
| Pre-1960 | 2 078 (17.4) | 10 714 (28.1) |
| 1960-9 | 4 943 (41.4) | 15 362 (40.2) |
| 1970-9 | 4 286 (35.9) | 10 728 (28.1) |
| 1980 and forward | 645 (5.4) | 1 372 (3.6) |
| Education | ||
| High school or less diploma/equivalent | 5 241 (43.9) | 16 452 (43.1) |
| Some college or bachelor’s degree | 5 736 (48.0) | 17 003 (44.5) |
| Advanced degree | 975 (8.1) | 4 721 (12.4) |
| Marital status | ||
| Married | 7 784 (65.1) | 25 667 (67.2) |
| Never married | 3 406 (28.5) | 9 615 (25.2) |
| Divorced | 762 (6.4) | 2 894 (7.6) |
| Race/ethnicity | ||
| White non-Hispanic | 8 443 (70.6) | 27 123 (71.1) |
| Black non-Hispanic | 1 312 (11.0) | 4 834 (12.7) |
| Other | 2 197 (18.4) | 6 219 (16.3) |
| Smoking | ||
| Never smoker | 7 126 (59.6) | 22 816 (59.8) |
| Past smoker | 2 855 (23.9) | 9 768 (25.6) |
| Current smoker | 1 971 (16.5) | 5 592 (14.7) |
| Problem drinking | ||
| No | 9 723 (81.4) | 31 327 (82.1) |
| Yes | 2 229 (18.6) | 6 849 (17.9) |
*Taken at time of submission of baseline questionnaire among members who submitted questionnaires at baseline (July 2001-June 2003) and follow-up (July 2004-Jan 2006).
†Deployment in support of wars in Iraq and Afghanistan considered if full deployment occurred between submission dates of baseline and follow-up questionnaires. Cohort members who were deployed after follow-up survey are included with non-deployers in these analyses.