| Variable | MSAF n (%) | CAF n (%) | RR [95% CI] | P-value |
| Clinical chorioamniotitis | 3 (1.4) | 1 (0.5) | 3 [0.50 - 17.95] | 0.3120 |
| Prolonged labour | 65 (30.5) | 19 (8.9) | 3.42 [2.13 - 5.49] | <0.001 |
| Instrumental delivery | 6 (2.82) | 1 (0.47) | 6 [0.73 - 49.41] | 0.1219 |
| Caesarean delivery | 95 (44.6) | 48 (22.5) | 1.97 [1.48 - 2.64] | <0.001 |
| Puerperal infection | 3 (1.4) | 0 (00) | N?A |
|