Table 3

Multivariate logistic regression analysis of demographic and psychosocial variables in relation to specific mental disorder diagnosis among Marines deployed to combat (N = 1113), 2007−2010
PTSD Anxiety Mood disorders Adjustment disorders
n = 53 n = 81 n = 62 n = 55
Variable OR 95% CI OR 95% CI OR 95% CI OR 95% CI
Gender
 Male (reference) 1.00 1.00 1.00 1.00
 Female 2.06 0.65–6.54 2.57* 1.07–6.15 5.68** 2.54–12.73 3.09* 1.14–8.37
Education
 High school or less (reference) 1.00 1.00 1.00 1.00
 Some college or college degree 0.56† 0.28–1.09 0.58* 0.36–0.95 0.77 0.45–1.32 0.54* 0.30–0.98
Race
 White (reference) 1.00 1.00 1.00 1.00
 Non-White 0.95 0.52–1.71 0.95 0.59–1.53 1.03 0.61–1.76 0.85 0.49–1.50
Marital status
 Married (reference) 1.00
 Never married 0.40** 0.20–0.78
 Divorced 1.17 0.44–3.12
Age, years
 18–21 (reference) 1.00
 22–26 0.85 0.43–1.71
 ≥27 0.37* 0.13–0.99
Total career combat deployments
 1 (reference) 1.00 1.00 1.00 1.00 1.00
 ≥2 1.71 0.94–3.11 1.93** 1.20–3.09 1.99* 1.17–3.40 1.72 0.99–3.00
Combat exposure
 Low (reference) 1.00
 Medium 1.72 0.77–3.81
 High 2.50* 1.18–5.30
Deployment stressors
 Low (reference) 1.00
 Medium 1.88* 1.00–3.48
 High 1.44 0.75–2.74
Unit cohesion
 Low (reference) 1.00
 Medium 0.57 0.28–1.14
 High 0.50 0.24–1.02
Satisfaction with leadership
 Low (reference) 1.00
 Medium 0.81 0.46–1.41
 High 0.38** 0.18–0.77
 Very high 0.45* 0.21–0.97
Positive deployment experiences
 Low (reference) 1.00
 Medium 0.91 0.48–1.74
 High 0.44 0.18–1.06
Organizational commitment
 Low (reference) 1.00 1.00
 Medium 0.58 0.32–1.05 0.73 0.40–1.33
 High 0.42* 0.21–0.84 0.37* 0.17–0.82

The demographic variables of gender, education, and race were controlled for in each multivariate model.

The following variables are not presented in the table because they were not significant in any model: deployment status, mild traumatic brain injury symptoms, and mental health care stigma.

Dashes indicate that variable was not retained in the final model because its association was not statistically significant.

CI, confidence interval; OR, odds ratio; PTSD, posttraumatic stress disorder.

**p < .01; *p < .05; †p < .10.

Booth-Kewley et al.

Booth-Kewley et al. BMC Psychiatry 2013 13:130   doi:10.1186/1471-244X-13-130

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