Recent substance use | RR | 95% CI | p-value |
---|---|---|---|
Overall | |||
 Nonea | Ref | – | – |
 Single substance | 1.08 | 1.05–1.11 | < 0.001 |
 Polysubstance | 1.09 | 1.05–1.13 | < 0.001 |
 Single- vs. poly-substance | 1.02 | 0.99–1.05 | 0.26 |
Overall – Illicit substance use only | |||
 Noneb | Ref | – | – |
 Single substance | 1.06 | 1.02–1.09 | 0.002 |
 Polysubstance | 1.09 | 1.05–1.13 | < 0.001 |
 Single- vs. poly-substance | 1.01 | 0.97–1.05 | 0.68 |
By type of sex | |||
 Vaginal sex only | Ref | – | – |
 Vaginal and anal sex | 1.21 | 1.16–1.26 | < 0.001 |
Vaginal sex only | |||
 Nonea | Ref | – | – |
 Single substance | 1.09 | 1.05–1.14 | < 0.001 |
 Polysubstance | 1.10 | 1.05–1.15 | < 0.001 |
 Single- vs. poly-substance | 1.01 | 0.96–1.05 | 0.81 |
Vaginal and anal sex | |||
 Nonea | Ref | – | – |
 Single substance | 1.05 | 1.02–1.09 | 0.004 |
 Polysubstance | 1.08 | 1.04–1.12 | < 0.001 |
 Single- vs. poly-substance | 1.03 | 0.99–1.06 | 0.12 |
By HIV status of partner | |||
 HIV-negative partners only | Ref | – | – |
 HIV-unknown partners only | 0.92 | 0.86–0.98 | 0.01 |
 HIV-negative & HIV-unknown partners only | 1.11 | 1.04–1.19 | 0.001 |
HIV-negative partners only | |||
 Nonea | Ref |  |  |
 Single substance | 1.08 | 1.02–1.13 | 0.004 |
 Polysubstance | 1.07 | 1.01–1.14 | 0.02 |
 Single- vs. poly-substance | 0.99 | 0.94–1.05 | 0.81 |
HIV-unknown partners only | |||
 Nonea | Ref | – | – |
 Single substance | 1.04 | 0.95–1.13 | 0.39 |
 Polysubstance | 0.97 | 0.88–1.07 | 0.57 |
 Single- vs. poly-substance | 0.94 | 0.85–1.03 | 0.20 |
HIV-negative & HIV-unknown partners only | |||
 Nonea | Ref | – | – |
 Single substance | 1.09 | 1.01–1.18 | 0.03 |
 Polysubstance | 1.13 | 1.06–1.20 | < 0.001 |
 Single- vs. poly-substance | 1.04 | 0.98–1.10 | 0.22 |