Table 2.
Multinomial Logistic Regression analysis to determine predictors of HIV, HCV and HIV-HCV prevalence among Male PWID in Delhi (2012)1, 2
| HIV mono-infection | HCV mono-infection | HIV & HCV co-infection | |
|---|---|---|---|
| RRR (95 % CI); p-value | RRR (95 % CI); p-value | RRR (95 % CI); p-value | |
| Comprehensive HIV knowledge | |||
| No comprehensive knowledge | 1.00 | 1.00 | 1.00 |
| Having comprehensive knowledge | 1.50 (1.03 - 2.20); 0.037 | 1.08 (0.86 - 1.34); 0.523 | 1.47 (1.13 - 1.91); 0.004 |
| Alcohol use | |||
| Never | 1.00 | 1.00 | 1.00 |
| ≤2 times/week | 0.85 (0.57 - 1.27); 0.432 | 0.96 (0.77 - 1.21); 0.759 | 0.88 (0.67 - 1.16); 0.363 |
| ≥3 times a week | 0.62 (0.28 - 1.36); 0.236 | 1.27 (0.89 - 1.81); 0.18 | 0.85 (0.53 - 1.36); 0.486 |
| Sex with any female partner in last 3 months3 | |||
| No sex | 1.00 | 1.00 | 1.00 |
| Safe sex | 0.55 (0.29 - 1.06); 0.076 | 0.79 (0.56 - 1.11); 0.17 | 0.62 (0.41 - 0.95); 0.026 |
| Unsafe sex | 0.60 (0.37 - 0.99); 0.046 | 0.93 (0.71 - 1.21); 0.567 | 0.40 (0.28 - 0.57); <0.001 |
| Accessed NSP services last 3 months | |||
| No | 1.00 | 1.00 | 1.00 |
| Yes | 1.91 (1.26 - 2.89); 0.002 | 1.37 (1.08 - 1.73); 0.009 | 1.74 (1.32 - 2.30); <0.001 |
| Duration of injecting drug use | |||
| ≤1 year | 1.00 | 1.00 | 1.00 |
| 2-5 years | 1.90 (1.02 - 3.51); 0.042 | 2.13 (1.53 - 2.95); <0.001 | 5.14 (2.91 - 9.09); <0.001 |
| 6-10 years | 3.01 (1.52 - 5.97); 0.002 | 2.74 (1.86 - 4.03); <0.001 | 8.53 (4.65 - 15.64); <0.001 |
| 11 years of more | 2.07 (0.86 - 5.00); 0.106 | 3.14 (2.00 - 4.93); <0.001 | 8.03 (4.09 - 15.76); <0.001 |
| Frequency of injection during the past month | |||
| Never | 1.00 | 1.00 | 1.00 |
| 1-10 days | 0.93 (0.47 - 1.83); 0.831 | 1.61 (1.14 - 2.29); 0.007 | 2.26 (1.43 - 3.57); <0.001 |
| 11-20 days | 1.57 (0.76 - 3.24); 0.226 | 3.15 (2.12 - 4.66); <0.001 | 3.46 (2.09 - 5.74); <0.001 |
| 21-30 days | 2.47 (1.30 - 4.69); 0.006 | 3.47 (2.43 - 4.95); <0.001 | 4.83 (3.06 - 7.61); <0.001 |
| Risky injection practice in last one month | |||
| Never | 1.00 | 1.00 | 1.00 |
| At least one risky injection | 1.40 (0.87 - 2.26); 0.171 | 1.39 (1.06 - 1.83); 0.016 | 1.38 (1.01 - 1.89); 0.045 |
| Prior knowledge of own HIV status4 | |||
| Know the result | 1.00 | 1.00 | 1.00 |
| Not tested/Don't know the result | 1.92 (1.31 - 2.82); 0.001 | 0.97 (0.76 - 1.23); 0.813 | 1.65 (1.25 - 2.17); <0.001 |
1Reference category of the dependent variable in the multinomial regression model is sero-negative participants (n = 916) compared to participants with HIV mono-infection (n = 146), HCV mono-infection (n = 781) and HIV & HCV co-infection (n = 449)
2Controlled for age, religion, marital status and regional origin
3Any female partner includes regular, non-regular or paid
4At baseline