Table 2.
Main and interaction effects of female gender and intervention arm on HIV incidence among PWID in Ukraine (N = 1195)
| HR (95% CI) | aHRa (95% CI) | |
|---|---|---|
| Model 1 | ||
| Network gender composition | 1.20 (0.96, 1.51) | 1.13 (0.93, 1.38) |
| Study arm (intervention vs control) | 0.75 (0.51, 1.09) | 0.79 (0.56, 1.11) |
| Interaction | 0.72 (0.52, 1.02) ~ | 0.71 (0.52, 0.97)* |
| Model 2 | ||
| Index gender (female vs male) | 1.17 (0.56, 1.77) | 1.10 (0.61, 1.63) |
| Study arm (intervention vs control) | 0.61 (0.45, 0.82)** | 0.62 (0.47, 0.83)** |
| Interaction | 0.88 (0.47, 1.64) | 0.85 (0.47, 1.56) |
HIV, human immunodeficiency virus; PWID, people who inject drugs; HR, hazard ratio; aHR, adjusted hazard ratio; CI, confidence interval
aControlling for age, city, log-injection frequency, and main effects of study arm and gender variable
~ p < 0.10 *p < 0.05, **p < 0.01, ***p < 0.001