Predictors of psychiatric disorders in combat veterans

BMC Psychiatry

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.

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