Table 3.
Multiple logistic regression for participation in the Millennium Cohort Family Study
| Service member characteristic | Model 1: demographic, military and administrative characteristics | Model 2: all characteristics | ||
|---|---|---|---|---|
| Odds ratio (95% CI) | P-value | Odds ratio 95% CI) | P-value | |
| Demographic, service, and administrative characteristics | ||||
| Gender | ||||
| Female | 0.32 (0.30–0.36) | <0.0001 | 0.33 (0.31–0.37) | <0.0001 |
| Male | Reference | Reference | ||
| Age group | ||||
| 17–24 years | 0.93 (0.85–1.02) | 0.0305 | 0.93 (0.84–1.01) | 0.0215 |
| 25–29 years | 1.02 (0.94–1.11) | 1.01 (0.93–1.10) | ||
| 30+ years | Reference | Reference | ||
| Race/ethnicity | ||||
| Black, non-Hispanic | 0.54 (0.49–0.60) | <0.0001 | 0.55 (0.50–0.61) | <0.0001 |
| Hispanic | 0.76 (0.69–0.83) | 0.77 (0.70–0.84) | ||
| Other | 0.76 (0.68–0.84) | 0.77 (0.70–0.86) | ||
| White, non-Hispanic | Reference | Reference | ||
| Education | ||||
| < High school completion/diploma | 0.59 (0.30–1.14) | <0.0001 | 0.83 (0.42–1.65) | <0.0001 |
| High school graduate/GED | 0.83 (0.77–0.88) | 0.83 (0.78–0.90) | ||
| Advanced degree | 1.32 (1.12–1.56) | 1.30 (1.10–1.54) | ||
| Bachelor's degree | 1.22 (1.10–1.35) | 1.20 (1.08–1.32) | ||
| Some college | Reference | Reference | ||
| Income | ||||
| < $50,000 | 0.88 (0.79–0.98) | <0.0001 | 0.91 (0.82–1.02) | 0.0411 |
| $50,000–$74,999 | 0.96 (0.86–1.07) | 0.97 (0.87–1.08) | ||
| Missing | 1.24 (1.03–1.50) | 1.20 (0.93–1.55) | ||
| $75,000+ | Reference | Reference | ||
| Number of dependent children | ||||
| Three or more | 0.99 (0.90–1.10) | 0.0121 | 1.01 (0.91–1.12) | 0.0043 |
| Two | 1.10 (1.02–1.19) | 1.12 (1.03–1.21) | ||
| One | 1.09 (1.02–1.17) | 1.11 (1.03–1.18) | ||
| None | Reference | Reference | ||
| Component | ||||
| Reserve/National Guard | 1.04 (0.97–1.12) | 0.2587 | 1.03 (0.96–1.11) | 0.3963 |
| Active duty | Reference | Reference | ||
| Service branch | ||||
| Air Force | 0.98 (0.90–1.06) | 0.0104 | 0.92 (0.84–1.00) | 0.0008 |
| Marine Corps | 1.05 (0.97–1.14) | 1.05 (0.97–1.14) | ||
| Navy/Coast Guard | 1.13 (1.04–1.23) | 1.11 (1.02–1.21) | ||
| Army | Reference | Reference | ||
| Paygrade | ||||
| Officer | 1.38 (1.20–1.57) | <0.0001 | 1.35 (1.18–1.54) | <0.0001 |
| Enlisted | Reference | Reference | ||
| Deployment/combat | ||||
| Deployed, in combat | 1.05 (0.98–1.14) | 0.5210 | 1.09 (1.01–1.18) | 0.1490 |
| Deployed, no combat | 1.07 (0.96–1.19) | 1.07 (0.96–1.19) | ||
| Deployed, unknown combat | 0.97 (0.76–1.24) | 0.93 (0.71–1.22) | ||
| Not deployed | Reference | Reference | ||
| P4 interview completion | ||||
| Partial | 0.61 (0.48–0.77) | <0.0001 | 0.64 (0.42–0.96) | 0.0296 |
| Complete | Reference | Reference | ||
| P4 respondent referred spouse | ||||
| Yes | 6.41 (6.04–6.79) | <0.0001 | 6.53 (6.16–6.93) | <0.0001 |
| No | Reference | Reference | ||
| Health behaviours | ||||
| Average hours of sleep/day | ||||
| <6 h | 0.84 (0.77–0.93) | <0.0001 | ||
| 6 h | 0.91 (0.83–1.00) | |||
| 7 h | 1.08 (0.99–1.18) | |||
| >8 h | 1.10 (0.94–1.28) | |||
| Missing | 0.92 (0.69–1.23) | |||
| 8 h | Reference | |||
| Description of usual activities | ||||
| Heavy work | 1.12 (1.00–1.24) | 0.0066 | ||
| Light loads, or climb often | 1.04 (0.96–1.13) | |||
| Stand/walk a lot, little lifting | 0.95 (0.88–1.02) | |||
| Missing | 1.11 (0.82–1.50) | |||
| Sit during day, walk little | Reference | |||
| Body mass index | ||||
| 30.0+ | 0.98 (0.90–1.07) | 0.0120 | ||
| 25.0–29.9 | 0.97 (0.91–1.04) | |||
| Missing | 0.57 (0.41–0.80) | |||
| < 25.0 | Reference | |||
| Days work missed due to illness or injury | ||||
| 16+ days | 1.19 (1.08–1.31) | 0.0124 | ||
| 6–15 days | 1.01 (0.91–1.13) | |||
| 1–5 days | 1.03 (0.96–1.10) | |||
| Missing | 1.07 (0.86–1.32) | |||
| None | Reference | |||
| Mental health | ||||
| VR-36 mental component | ||||
| Highest 15% | 0.97 (0.90–1.06) | 0.0405 | ||
| Lowest 15% | 0.99 (0.90–1.09) | |||
| Missing | 1.41 (1.10–1.81) | |||
| Middle 70% | Reference | |||
| Stress and relationship issues | ||||
| Stress: no one to turn to | ||||
| Bothered a lot | 0.92 (0.80–1.05) | 0.0085 | ||
| Bothered a little | 0.89 (0.81–0.97) | |||
| Missing | 0.65 (0.45–0.95) | |||
| Not bothered | Reference | |||
| Stress: financial | ||||
| Bothered a lot | 0.81 (0.73–0.89) | 0.0007 | ||
| Bothered a little | 0.95 (0.89–1.01) | |||
| Missing | 0.88 (0.57–1.36) | |||
| Not bothered | Reference | |||
| Attitude towards military | ||||
| Negative/somewhat negative | 0.92 (0.85–1.00) | 0.0007 | ||
| Neither negative or positive | 0.85 (0.78–0.92) | |||
| Missing | 1.07 (0.79–1.43) | |||
| Positive/somewhat positive | Reference | |||
| Stressful events since 2008 | ||||
| 3 or more | 1.06 (0.97–1.17) | 0.0347 | ||
| 1 or 2 | 1.09 (1.03–1.16) | |||
| Missing | 0.84 (0.54–1.32) | |||
| None | Reference | |||