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Table 2 Univariate and multivariate Cox proportional hazard regression analyses of the time to all-cause death among people who inject drugs in Vancouver, Canada (n = 2330)

From: The impact of drug use patterns on mortality among polysubstance users in a Canadian setting: a prospective cohort study

  Unadjusted hazard ratio (HR) Adjustedhazard ratio (AHR)
Variable HR (95% CI) p -value AHR (95% CI) p -value
Daily alcohol use* 0.98 0.77 – 1.25 0.854 1.00 0.78 – 1.28 0.979
Daily heroin injection* 0.75 0.60 – 0.95 0.018 0.92 0.71 – 1.19 0.502
Daily heroin (non-injection)* 1.12 0.51 – 2.44 0.779 1.44 0.68 – 3.07 0.340
Daily cocaine injection* 1.41 1.12 – 1.78 0.003 1.36 1.06 – 1.76 0.017
Daily amphetamine injection* 0.39 0.10 – 1.54 0.177 0.41 0.10 – 1.72 0.224
Daily amphetamine (non-injection)* 1.13 0.29 – 4.50 0.859 0.94 0.13 – 6.88 0.949
Daily crack cocaine smoking* 0.91 0.74 – 1.12 0.358 0.83 0.67 – 1.04 0.099
Daily speedball injectionn 1.02 0.69 – 1.52 0.917 0.98 0.62 – 1.56 0.944
  1. *Refers to activities in the six months prior to interview. Model was adjusted for HIV serostatus, age, and unstable housing.