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Table 4 Univariate and multivariate Cox proportional hazard analyses of hospitalizations for a cutaneous injection-related infection or related infectious complication among among Scientific Evaluation of Supervised Injection participants.

From: Determinants of hospitalization for a cutaneous injection-related infection among injection drug users: a cohort study

  Unadjusted Adjusted
  Hazard Ratio (HR) Hazard Ratio (AHR)
Variable HR (95% CI) p -value AHR (95% CI) p -value
Age       
   (per year older) 0.98 (0.96 - 1.01) 0.146    
Sex       
   (Female vs Male) 1.59 (1.07 - 2.39) 0.024 1.36 (0.90 - 2.05) 0.139
Unstable housing*       
   (Yes vs No) 1.65 (1.08 - 2.53) 0.021 1.26 (0.79 - 2.02) 0.328
Cocaine injection*       
   (Daily vs Not daily) 1.75 (1.17 - 2.62) 0.006 1.46 (0.94 - 2.25) 0.090
Speedball injection*       
   (Daily vs Not daily) 1.90 (1.15 - 3.14) 0.012 1.19 (0.69 - 2.07) 0.528
HIV serostatus       
   (Positive vs Negative) 2.12 (1.39 - 3.24) <0.001 1.79 (1.16 - 2.75) 0.008
Hospital referral†       
   (Yes vs No) 2.41 (1.55 - 3.77) <0.001 5.38 (3.39 - 8.55) <0.001
  1. *Behaviour refers to activities in the last 6 months. †Indicates data derived from SIF database and by a study nurse. CI = confidence interval.