Table 2 Measures of variations and predictors for HIV prevalence among street-based female sex workers (FSW) by multilevel logistic regression for the two rounds combined of Integrated Behavioural and Biological Assessment survey (IBBA) (un-weighted data)
Variable | Category | Total | HIV positive | Individual model | Individual + district level intercept model | Individual + district level slope model |
|---|---|---|---|---|---|---|
N = 3,873 | N (%) | Odds of having HIV (95% CI) | Odds of having HIV (95% CI) | Odds of having HIV (95% CI) | ||
IBBA survey | Round 1 | 1688 | 285 (16.9) | 1 | 1 | 1 |
Round 2 | 2185 | 266 (12.2) | 0.60 (0.50-0.73) | 0.60 (0.49-0.72) | 0.57 (0.43-0.75) | |
Age group | >40 years | 470 | 49 (10.4) | 1 | 1 | 1 |
18-39 years | 3403 | 502 (14.8) | 1.93 (1.39-2.68) | 1.95 (1.40-2.71) | 1.95 (1.40-2.71) | |
Marital status | Currently married | 2688 | 307 (11.4) | 1 | 1 | 1 |
Previously married | 892 | 195 (21.9) | 1.87 (1.47-2.39) | 1.89 (1.48-2.42) | 1.89 (1.48-2.42) | |
Never married | 289 | 49 (17.0) | 1.23 (0.84-1.80) | 1.26 (0.86-1.84) | 1.25 (0.85-1.82) | |
Consistent condom use with regular sex partner | Yes | 242 | 45 (18.6) | 1 | 1 | 1 |
No | 2635 | 304 (11.5) | 0.84 (0.58-1.21) | 0.85 (0.59-1.22) | 0.86 (0.60-1.25) | |
No regular sex partner | 996 | 202 (20.3) | 1.21 (0.82-1.78) | 1.22 (0.83-1.79) | 1.24 (0.84-1.83) | |
Sex work as main source income | Yes | 1777 | 288 (16.2) | 1.22 (1.00-1.48) | 1.22 (1.00-1.48) | 1.22 (1.01-1.48) |
No | 2096 | 263 (12.5) | 1 | 1 | 1 | |
Consistent condom use with occasional/regular clients | Yes | 2557 | 390 (15.3) | 1.29 (1.05-1.59) | 1.27 (1.03-1.57) | 1.25 (1.01-1.55) |
No | 1316 | 161 (12.2) | 1 | 1 | 1 | |
Episode of violence/forced sex in last 1 year | Yes | 960 | 189 (19.7) | 1.74 (1.42-2.14) | 1.76 (1.43-2.16) | 1.74 (1.42-2.14) |
No | 2904 | 361 (12.4) | 1 | 1 | 1 | |
Ratio of FSWs contacted and registered with targeted interventions | Low | 2235 | 263 (11.8) | 1 | 1 | |
High | 1638 | 288 (17.6) | 2.02 (1.18-3.45) | 2.23 (1.28-3.89) | ||
Condom requirement target met in district | No | 1863 | 216 (11.6) | 1 | 1 | |
Yes | 2010 | 335 (16.7) | 0.50 (0.26-0.99) | 0.42 (0.21-0.84) | ||
Proportion of urban population in district | Low | 1555 | 149 (9.6) | 1 | 1 | |
Medium | 1178 | 235 (19.9) | 2.54 (1.58-4.08) | 2.17 (1.34-3.51) | ||
High | 1140 | 167 (14.6) | 1.55 (1.05-2.29) | 1.28 (0.86-1.91) | ||
District variance total | 0.166 (0.093) | 0.027 (0.024) | 0.005 (0.087) | |||
District variance IBBA round 2 | 0.070 (0.141) | |||||
LR test vs. logistic regression: chibar2(01) | 53.80 | 3.75 | 7.23 | |||
Prob > =chibar2 | <0.001 | 0.026 | 0.065 | |||