Table 3.

Associations of mental disorders with daytime visits to primary health care, negative binominal regression analysis. Homeless persons staying in shelters in Helsinki metropolitan area, Finland, year 2008 (N = 158)

	Model 1		Model 2		Model 3
	IRR	95% CI	IRR	95% CI	IRR	95% CI
No mental disorder (ref.)	1		1		1
SUDs without other mental disorder	4.9	2.5–9.9	5.7	2.7–11.9	4.5	2.2–9.0
Mental disorder without SUDs	5.0	2.4–10.8	5.2	2.5–11.0	5.0	2.5–10.0
Dual diagnosis	11.0	5.9–20.6	12.4	6.6–23.4	10.4	5.6–19.3

ref. = reference group

Model 1: Crude model (Pseudo R2 = 0.04)

Model 2: Adjusted for age and gender (Pseudo R2 = 0.04)

Model 3: Adjusted for age, gender, and Charlson Comorbidity Index (Pseudo R2 = 0.06)