Table 4.

Multivariate Analyses: PTSD Screen Regressed on Health Care Utilization Variables*

Model	PTSD screen (0 = negative, 1 = positive)
Poisson regression	IRR	SE	95% CI	p
Total outpatient visits†	1.62	0.19	1.28–2.04	<.001
Outpatient visits: physical health	1.24	0.10	0.96–1.61	.101
Outpatient visits: emotional health	4.01	0.94	2.53–6.36	<.001
Logistic regression	OR	SE	95% CI	p
Any inpatient admission	0.90	0.22	0.56–1.44	.675

IRR = incidence rate ratio.

*Analyses adjusted for age, gender, ethnicity, marital status, level of education and work status, clinic site clustering, and population weights.

^†Also adjusted for physical comorbidity (SIC).