Table 2.

Results of univariate analysis of association between the exposure variables and retention at different time points (the first row represents the results for program specific data and the second row for “being on OST” data)

	>3-month retention		>6-month retention
	OR (95% CI)	p value	OR (95% CI)	p value
Age (>40 vs. ≤40 years)	2.47 (1.62–3.77)	<0.001	1.89 (1.27–2.81)	0.002
	2.38 (1.54–3.67)	<0.001	2.04 (1.37–3.04)	<0.001
Age (cont. variable)	1.07 (1.04–1.10)	<0.001	1.06 (1.03–1.08)	<0.001
	1.07 (1.04–1.10)	<0.001	1.06 (1.03–1.08)	<0.001
Gender (male vs. female)	0.98 (0.29–3.33)	0.974	1.57 (0.56–4.43)	0.385
	1.14 (0.34–3.89)	0.830	1.86 (0.67–5. 24)	0.224
Socially vulnerable	1.20 (0.73–1.97)	0.463	1.35 (0.83–2.21)	0.232
	1.18 (0.71–1.98)	0.519	1.21 (0.75–1.96)	0.433
Hepatitis C status	1.45 (0.97–2.17)	0.071	1.43 (0.97–2.11)	0.072
	1.25 (0.83–1.90)	0.281	1.02 (0.69–1.51)	0.908
HIV status	0.82 (0.31–2.18)	0.702	0.78 (0.33–1.85)	0.583
	0.73 (0.28–1.93)	0.528	0.61(0.26–1.44)	0.265
	>9-month retention		>12-month retention
Age (>40 vs. ≤40 years)	2.23 (1.46–3.41)	<0.001	2.49 (1.62–3.83)	<0.001
	2.41(1.59–3.66)	<0.001	2.44 (1.59–3.73)	<0.001
Age (cont. variable)	1.07 (1.04–1.10)	<0.001	1.07 (1.04–1.10)	<0.001
	1.07 (1.05–1.10)	<0.001	1.08 (1.05–1.11)	<0.001
Gender	3.21 (1.28–8.07)	0.013	2.46 (0.95–6.41)	0.065
	3.69 (1.49–9.14)	0.005	2.89 (1.13–7.43)	0.027
Socially vulnerable	1.19 (0.72–1.98)	0.487	1.14 (0.69–1.86)	0.612
	1.17 (0.71–1.92)	0.534	1.18 (0.72–1.93)	0.515
Hepatitis C status	1.73 (1.15–2.63)	0.009	1.76 (1.15–2.67)	0.009
	1.18 (0.79–1.78)	0.403	1.23 (0.82–1.86)	0.318
HIV status	0.77 (0.32–1.82)	0.550	1.14 (0.42–3.07)	0.797
	0.61 (0.26–1.45)	0.265	0.89 (0.33–2.39 )	0.816

Age (cont. variable) analysis “age” as a continious variable i.e. examains the retention per each year increase in age