Multilevel logistic regression model of determinants of syphilis prevalence among clients of FSWs, IBBA round 1 and round 2
| Characteristics | Without programme variable and interaction terms | With programme variable and interaction terms | ||||
|---|---|---|---|---|---|---|
| Fixed part of the model | AOR | p Value | 95% CI | AOR | p Value | 95% CI |
| Constant | 0.01 | <0.001 | 0.01 to 0.02 | 0.01 | 0.030 | 0.01 to 0.03 |
| IBBA round | ||||||
| Round 1 | ||||||
| Round 2 | 0.49 | <0.001 | 0.38 to 0.62 | 0.33 | 0.066 | 0.10 to 1.08 |
| Age of respondent (years) | ||||||
| <25 | ||||||
| 25–34 | 1.43 | 0.009 | 1.09 to 1.88 | 1.47 | 0.006 | 1.12 to 1.92 |
| ≥35 | 2.32 | <0.001 | 1.76 to 3.04 | 2.31 | <0.001 | 1.76 to 3.03 |
| Can read and write | ||||||
| No | ||||||
| Yes | 0.66 | <0.001 | 0.54 to 0.81 | 0.65 | <0.001 | 0.53 to 0.80 |
| Typology of FSWs | ||||||
| Public place-based | 1.14 | 0.436 | 0.83 to 1.56 | 0.94 | 0.734 | 0.67 to 1.33 |
| Brothel-based | 1.34 | 0.092 | 0.95 to 1.88 | 1.11 | 0.575 | 0.78 to 1.58 |
| Home-based | ||||||
| Other | 1.09 | 0.733 | 0.67 to 1.77 | 1.27 | 0.449 | 0.69 to 2.33 |
| Anal sex with a man/transgender in past 6 months | ||||||
| No | ||||||
| Yes | 1.58 | 0.002 | 1.18 to 2.11 | 1.53 | 0.005 | 1.14 to 2.06 |
| Consistent condom use with FSWs | ||||||
| No | ||||||
| Yes | 0.80 | 0.034 | 0.64 to 0.98 | 0.85 | 0.141 | 0.69 to 1.05 |
| HIV infection status | ||||||
| Negative | ||||||
| Positive | 6.88 | <0.001 | 5.51 to 8.59 | 4.14 | <0.001 | 3.04 to 5.64 |
| Baseline syphilis prevalence | 1.19 | <0.001 | 1.10 to 1.30 | 1.18 | <0.001 | 1.10 to 1.26 |
| Programme indicators | ||||||
| FSW programme coverage at baseline | 1.00 | 0.685 | 0.99 to 1.01 | |||
| Difference in coverage between the two rounds | 1.00 | 0.327 | 1.00 to 1.01 | |||
| Interaction between round and | ||||||
| Difference in coverage between the two rounds | 0.98 | 0.023 | 0.97 to 0.99 | |||
| Baseline HIV prevalence | 0.85 | 0.003 | 0.76 to 0.94 | |||
| Status of HIV | 3.57 | <0.001 | 2.26 to 5.64 | |||
| Typology of FSWs | ||||||
| Public place-based | 4.61 | 0.003 | 1.67 to 12.72 | |||
| Brothel-based | 4.04 | 0.006 | 1.48 to 11.04 | |||
| Other | 2.33 | 0.186 | 0.67 to 8.12 | |||
| Random part of the model | ||||
|---|---|---|---|---|
| Estimated district-level variance of | Estimated variance | 95% CI of variance | Estimated variance | 95% CI of variance |
| Round | 0.07 | 0.03 to 0.17 | 0.04 | 0.01 to 0.10 |
| Intercept | 0.00 | Not significantly different from 0 | 0.00 | Not significantly different from 0 |
AOR, adjusted OR; FSW, female sex worker; IBBA, integrated behavioural and biological assessment survey.