Table 2

Logistic regression analysis of demographic and psychosocial variables in relation to all psychiatric disorders among Marines deployed to combat (N = 1,113), 2007−2010
Univariate Multivariate
Variable OR 95% CI OR 95% CI
Gender
 Male (reference) 1.00 1.00
 Female 3.07** 1.64–5.75 2.87** 1.48–5.57
Education
 High school or less (reference) 1.00 1.00
 Some college or college degree 0.64** 0.47–0.87 0.66* 0.47–0.93
Marital status
 Married (reference) 1.00 1.00
 Never married 1.07 0.77–1.47 0.91 0.65–1.29
 Divorced 2.13** 1.20–3.77 1.76 0.96–3.21
Age, years
 18–21 (reference) 1.00
 22–26 0.87 0.61–1.24
 ≥27 0.63* 0.42–0.94
Race
 White (reference) 1.00
 Non-White 0.89 0.65–1.22
Total career combat deployments
 1 (reference) 1.00 1.00
 ≥2 1.46* 1.07–1.98 1.45* 1.05–2.00
Deployment status
 Member of deployed unit (reference) 1.00
 Individual augmentee 1.07 0.70–1.63
Deployment stressors
 Low (reference) 1.00
 Medium 1.27 0.86–1.88
 High 1.56* 1.06–2.29
Combat exposure
 Low (reference) 1.00 1.00
 Medium 1.73** 1.18–2.54 1.64* 1.10–2.43
 High 1.42 0.95–2.10 1.22 0.79–1.86
Unit cohesion
 Low (reference) 1.00
 Medium 0.66* 0.44–0.98
 High 0.68 0.46–1.00
Satisfaction with leadership
 Low (reference) 1.00 1.00
 Medium 0.77 0.52–1.15 0.88 0.58–1.33
 High 0.59* 0.39–0.91 0.75 0.47–1.19
 Very high 0.44** 0.27–0.73 0.52* 0.30–0.89
Positive deployment experiences
 Low (reference) 1.00 1.00
 Medium 0.60** 0.42–0.87 0.70 0.47–1.03
 High 0.63* 0.42–0.93 0.82 0.53–1.28
Mild traumatic brain injury
 No (reference) 1.00 1.00
 Yes 1.78** 1.17–2.71 1.85** 1.17–2.93
Organizational commitment
 Low (reference) 1.00
 Medium 0.74 0.52–1.06
 High 0.62* 0.42–0.92

Dashes indicate that variable was not retained in the final model because its association was not statistically significant. CI, confidence interval; OR, odds ratio. *p < 0.05; **p < 0.01; 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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