Risk factors for syphilis seroconversion among injection drug users in Los Angeles County, 1994–6
| Unadjusted ratio | Adjusted ratio* | |||||
|---|---|---|---|---|---|---|
| Risk factor | HR | 95% CI | p Value | HR | 95% CI | p Value |
| HR = hazard ratio. | ||||||
| 95% CI = 95% confidence intervals. | ||||||
| *Adjusted for sex, race, and age group. | ||||||
| Multiple sex partners | 8.0 | 2.5, 25.4 | ≤0.01 | 7.8 | 2.4, 25.0 | ≤0.01 |
| Recent initiation to IDU | 6.7 | 1.7, 25.4 | ≤0.01 | 4.6 | 1.1, 18.8 | ≤0.05 |
| Exchanged money for sex | 3.0 | 0.9, 9.4 | <0.05 | 3.0 | 0.9, 9.6 | 0.06 |