Table 3. Multilevel Logistic Regression Estimation of Individual and Couple Level Risk Factors for Actor Anti-HCV Positivity, Final Model, Shiraz (southern of Iran), 2011 .

Effects a	β	SE	Adjusted Odds Ratio (95% CI)
Actor IDU	2.57	0.62	13.03 (3.9-43.82)
Actor Razor sharing	1.57	0.49	4.81 (1.84-12.55)
Actor HIV positive	1.96	0.84	7.1 (1.37-36.97)
Actor male	2.18	0.52	8.83 (3.16-24.78)
No condom use in sexual activity with main heterosexual partner	1.89	0.92	6.6 (1.1-39.6)

^aRandom effect (level 2 variance component)