Table 2: Multivariate analysis of risk factors -All women.
| Risk Factors | Odds Ratios (95% Confidence Intervals) | P value |
| Age (per 5 years increase) | 1.4 (1.1 - 2.1) | 0.03 |
| Age of sex partner (per 5 years increase) | 1.5 (1.0 - 2.2) | 0.04 |
| HIV sero-positivity | 6.0 (4.3 - 8.3) | < 0.001 |
| Not first pregnancy | 1.9 (1.5 - 2.2) | < 0.001 |
| Current or prior GUD | 2.4 (1.9 - 3.4) | < 0.001 |