Comparison of the strength of the association between some factors and vaginal flora abnormalities (modelled as polytomous response) according to the study sites, among 1367 female sex workers screened at two African and two Indian sites
| Factors* | Outcomes | Study sites | Overall test for interaction | |||
|---|---|---|---|---|---|---|
| Mudhol/Jamkhandi | Cotonou | Chennai | Kampala | |||
| OR and 95% CI | OR and 95% CI | OR and 95% CI | OR and 95% CI | p Value | ||
| Age <20 | IVF | – | – | – | 1.18 (0.43 to 2.92) | 0.05 |
| BV | – | 3.71 (0.97 to 24.53) | – | 1.53 (0.79 to 3.03) | ||
| HIV | IVF | 1.72 (0.16 to 18.48) | 3.38 (1.65 to 7.34) | 3.06 (1.38 to 6.79) | 1.28 (0.74 to 2.20) | 0.02 |
| BV | 1.87 (0.52 to 7.34) | 3.07 (1.62 to 6.27) | 1.47 (0.73 to 3.03) | 1.25 (0.82 to 1.92) | ||
| GC | IVF | – | 4.98 (1.26 to 33.3) | – | 0.88 (0.35 to 2.04) | 0.04 |
| BV | – | 8.48 (2.47 to 53.54) | – | 1.21 (0.64 to 2.32) | ||
| TV | IVF | – | – | 1.96 (0.46 to 7.76) | 3.14 (1.42 to 7.08) | 0.04 |
| BV | – | – | 4.10 (1.56 to 12.85) | 1.76 (0.88 to 3.70) | ||
| CV | IVF | – | 0.69 (0.29 to 1.62) | 0.66 (0.35 to 1.21) | 0.39 (0.23 to 0.66) | 0.03 |
| BV | – | 0.45 (0.21 to 0.97) | 1.0 (0.62 to 1.62) | 0.43 (0.29 to 0.64) | ||
Results have been obtained from the final multivariate model which included in addition: Number of sexual acts/last 7 days ≥35, Current contraceptive method and Anal sex/past 30 days.
Blank cells correspond to invalid results due to cells with 0.
*Factors of which the product-term with the study sites had a significant association with vaginal flora abnormalities (p≤0.05).
BV, bacterial vaginosis (vs normal flora); CV, candidiasis; GC, gonorrhoea; IVF, intermediate vaginal flora (vs normal flora); OR, odds ratio (adjusted); TV, trichomoniasis.