Table 4 Bivariate and multivariate analysis of risk factors for HCV infection
Risk factors | All HCV infection | |
|---|---|---|
Bivariate OR (95% CI) | Multivariate aOR (95% CI) | |
Age | ||
Up to 29 years | 1.00 | 1.00 |
≥ 30 years | 1.29 (1.02–1.64) | 1.10 (1.01–1.75) |
Main illicit drugs useda | ||
Marijuana | 1.00 | 1.00 |
Crack/oxi + Cocaine | 3.58 (2.15–5.87) | 3.24 (2.03–5.38) |
Frequency of use of illicit drugsa | ||
Non-daily | 1.00 | 1.00 |
Daily | 3.89 (2.96–5.06) | 4.01 (2.85–5.62) |
Over 12 years using illicit drugs | ||
No | 1.00 | 1.00 |
Yes | 29.52 (13.47–52.31) | 27.55 (13.78–50.23) |
Injection drug useb | ||
No | 1.00 | 1.00 |
Yes | 2.71 (2.03–3.57) | 3.04 (2.35–4.02) |
Sharing of drug use equipmenta | ||
No | 1.00 | 1.00 |
Yes | 4.64 (3.80–6.36) | 4.18 (3.54–6.07) |
Involvement in illicit drug traffickinga | ||
No | 1.00 | 1.00 |
Yes | 4.77 (3.61–7.16) | 4.26 (3.35–7.49) |
Unprotected sexual intercoursea | ||
No | 1.00 | 1.00 |
Yes | 1.37 (1.02–1.81) | 1.22 (1.01–1.69) |
More than 12 sexual partnersa | ||
No | 1.00 | 1.00 |
Yes | 1.28 (1.05–1.59) | 1.19 (1.02–1.75) |
Tattoos | ||
No | 1.00 | 1.00 |
Yes | 4.14 (3.11–5.32) | 3.96 (2.84–4.95) |