Table 1. Cox Proportional Hazards Regression Analysis of Time to HCV Infection in Young IDUs (Aged 14-24 Years) in Vancouver, British Columbia, Canada.
| Relative Hazard (95% Confidence Interval) |
||
|---|---|---|
| Unadjusted | Adjusteda | |
| Age | 0.94 (0.84-1.05) | NA |
| Female sex | 1.39 (0.79-2.45) | NA |
| Aboriginal ethnicity | 0.91 (0.45-1.82) | NA |
| Survival sex workb | 3.04 (1.73-5.32) | 2.30 (1.27-4.15) |
| Unstable housingb | 1.99 (1.10-3.59) | 1.34 (0.72-2.51) |
| Residing in IDU epicenterb | 2.53 (1.42-4.49) | 1.75 (0.93-3.26) |
| Unprotected sex (inconsistent condom use)b |
0.98 (0.56-1.70) | NA |
| Receptive syringe sharingb | 2.02 (1.14-3.57) | 1.80 (1.00-3.24) |
| Daily heroin injectionb | 1.99 (1.12-3.55) | 1.34 (0.73-2.45) |
| Daily cocaine injectionb | 2.18 (1.18-4.02) | 1.52 (0.80-2.86) |
| Daily crystal methamphetamine injectionb |
0.45 (0.06-3.26) | NA |
| Daily crack cocaine smokingb | 1.28 (0.71-2.33) | NA |
Abbreviations: HCV, hepatitis C virus; IDU, injecting drug user; NA, not applicable.
a
Adjusted for cohort of recruitment and variables significanPt at .05 (ie, unstable housing, residing in an IDU epicenter, daily heroin injection, and daily cocaine injection).
b
Refers to behaviors and patterns in the past 6 months. All analyses were restricted to HCV-negative youths (n = 179) who had at least 1 follow-up visit (n = 127).