Table 2.
Multivariate regression analysis of factors associated with having ever injected drugs among MSM* in Madrid and Barcelona (N = 3387)
| aPR** | (95% CI***) | |
|---|---|---|
| Number of men who had penetrated him (last 12 months) | ||
| None | 1.0 | |
| ≤ 5 | 5.1 | 1.3–21.7 |
| > 5 | 10.4 | 2.5–43.4 |
| Place where the largest number of partners were met | ||
| Others | 1.0 | |
| Private parties | 7.5 | 4.5–12.3 |
| Ever injected steroids | ||
| No | 1.0 | |
| Yes | 2.3 | 1.3–4.2 |
| STI diagnosis (ever) | ||
| No | 1.0 | |
| Yes | 2.2 | 1.1–4.6 |
| Been paid for sex | ||
| Never | 1.0 | |
| > 12 months ago | 1.3 | 0.7–2.7 |
| Last 12 months | 2.1 | 1.3–3.5 |
| Gender of sex partners (ever) | ||
| Only men | 1.0 | |
| Men and women | 2.0 | 1.3–3.1 |
*MSM: men who have sex with men
**aPR: adjusted Prevalence Ratio
***95% CI: 95% confidence interval