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. Author manuscript; available in PMC: 2016 Nov 1.

Published in final edited form as: Drug Alcohol Depend. 2015 Sep 28;156:57–61. doi: 10.1016/j.drugalcdep.2015.08.037

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 MMT^b,^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 injection^c
(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.

^a

CI = confidence interval;

^b

MMT = methadone maintenance therapy;

^c

Behaviours refer to activities in the last six months.