Table 2.

Bivariable and multivariable Cox regression analyses of the time to all-cause mortality among 2335 persons who inject drugs (PWID).

	Unadjusted Hazard Ratio (HR)			Adjusted† Hazard Ratio (AHR)
Variable	RH	(95% CI)	p-value	ARH	(95% CI)a	p-value
Enrollment in MMTb,c
(Yes vs. No)	0.84	(0.70 – 0.99)	0.044	0.73	(0.61 – 0.88)	<0.001
Age
(Per 10 years older)	1.35	(1.23 – 1.49)	<0.001	1.29	(1.11 – 1.49)	<0.001
HIV infection
(Yes vs. No)	2.84	(2.38 – 3.39)	<0.001	3.03	(2.53 – 3.64)	<0.001
≥Daily heroin injectionc
(Yes vs. No)	0.77	(0.62 – 0.96)	0.022	0.99	(0.78 – 1.24)	0.898

^†Model was also adjusted for years since first injection at baseline.

^aCI = confidence interval;

^bMMT = methadone maintenance therapy;

^cBehaviours refer to activities in the last six months.