Table 3.
Logistic regression models predicting diagnosed alcohol-use and drug-use disorders among OEF/OIF veterans
| Characteristic | Alcohol-Use Diagnosis n = 390,833 | Drug-Use Diagnosis n = 435,690 | ||
|---|---|---|---|---|
| AOR (95% CI) | p-value | AOR (95% CI) | p-value | |
| Intercept | 0.15 (0.15–0.16) | < .001 | 0.13 (0.13–0.13) | < .001 |
| Military Sexual Trauma (Ref = No) | 1.63 (1.49–1.79) | < .001 | 2.26 (2.09–2.43) | < .001 |
| Gender (Ref = Male) | 0.36 (0.34–0.38) | < .001 | 0.37 (0.35–0.38) | < .001 |
| Race/Ethnicity (Ref=White) | ||||
| Black | 0.93 (0.91–0.96) | < .001 | 1.08 (1.05–1.11) | < .001 |
| Hispanic | 1.02 (0.99–1.05) | .29 | 0.88 (0.85–0.91) | < .001 |
| Other | 0.96 (0.90–1.01) | .12 | 0.65 (0.60–0.69) | < .001 |
| Unknown | 0.69 (0.65–0.74) | < .001 | 0.58 (0.53–0.62) | < .001 |
| Age | 0.98 (0.98–0.98) | < .001 | 0.95 (0.95–0.96) | < .001 |
| Branch of Service (Ref = Army) | ||||
| Navy/Coast Guard | 0.67 (0.65–0.70) | < .001 | 0.67 (0.65–0.70) | < .001 |
| Marines | 1.16 (1.13–1.19) | < .001 | 0.76 (0.74–0.78) | < .001 |
| Air Force | 0.53 (0.51–0.55) | < .001 | 0.56 (0.53–0.58) | < .001 |
| Combat Exposure (Ref = No) | 1.02 (1.00–1.04) | .04 | 1.12 (1.10–1.14) | < .001 |
| Interaction | 1.43 (1.27–1.61) | < .001 | 1.17 (1.06–1.31) | .003 |
Note: MST = military sexual trauma; OEF = Operation Enduring Freedom; OIF = Operation Iraqi Freedom; AOR = adjusted odds ratio; CI = confidence interval; Ref = reference group. Both models included the interaction of military sexual trauma (Ref = No) and gender (Ref = male). Age was mean centered; the intercept reflects the value when age is 32.4 for the AUD model and 32.0 for the DUD model.