Table 3:
Unadjusted and adjusted hazard ratios for factors related to initiation of injection drug use among street-involved youth in Vancouver, British Columbia, 2005–2010 (n = 395)
| Characteristic | Hazard ratio (95% CI) | |
|---|---|---|
| Unadjusted | Adjusted | |
| Sociodemographic | ||
| Age (per yr older) | 0.91 (0.86–0.97) | 0.81 (0.75–0.88) |
| Male sex | 0.61 (0.42–0.88) | 0.90 (0.60–1.36) |
| White ethnicity (v. other) | 1.28 (0.87–1.89) | 0.24 (0.11–0.49) |
| Recent drug use* | ||
| Cocaine | 0.94 (0.73–1.21) | — |
| Crack | 1.20 (0.93–1.56) | — |
| Heroin | 1.39 (1.06–1.82) | 1.73 (1.09–2.74) |
| Crystal methamphetamine | 1.51 (1.19–1.99) | 1.93 (1.31–2.85) |
| Cannabis | 0.94 (0.67–1.26) | — |
| Alcohol | 1.02 (0.77–1.37) | — |
Note: CI = confidence interval.
*
All drug-use variables refer to noninjection use in the preceding 6 months.