Table 3.

Multivariate analysis at >9- and >12-month time points (gender and hep C status are adjusted for age as a group variable)

	Model I: program specific		Model II: being on OST
	OR 95% CI	P values	ORs 95% CI	p values
9 months
Age (>40 vs. ≤40 years)	2.05 (1.34–3.15)	<0.001	2.33 (1.53–3.55)	<0.001
Age (cont. variable)	1.06 (1.03–1.08)	<0.001	1.06 (1.05–1.09)	<0.001
Gender (male vs. female)	2.71 (1.06–6.95)	0.038	3.18 (1.26–8.0)	0.014
Hepatitis C status	1.55 (1.01–2.37)	0.042
12 months
Age (>40 vs. ≤40 years)	2.36 (1.53–3.64)	<0.001	2.37 (1.55–3.64)	<0.001
Age (cont. variable)	1.06 (1.04–1.09)	<0.001	1.06 (1.04–1.10)	<0.001
Gender (male vs. female)			2.48 (0.95–6.48)	0.064
Hepatitis C status	1.58 (1.03–2.44)	0.034