| Variables | OR | P | 95% (CI) |
| GA < 37wk (GA < 37) | 3.0 | 0.001 | (2.0–4.6) |
| Eclampsia (EC) | 6.0 | 0.049 | (1.0–36.6) |
| Maternal fever during labour (MFL) | 7.8 | 0.001 | (3.1–20.0) |
| Clinical chorioamnionitis (CC) | 6.1 | 0.005 | (1.7–22.0) |
| Fetal bradycardia (FB) | 20.9 | 0.001 | (11.3–38.6) |
| Abruptio placentae (AP) | 21.7 | 0.001 | (8.1–57.7) |
| MSAF | 11.3 | 0.001 | (7.3–17.6) |
| Emergency CS (ECS) | 14.1 | 0.001 | (8.6–23.1) |
| General anaesthesia (Ga) | 17.2 | 0.001 | (6.9–42.9) |
| PROM >18 h | 2.10 | 0.003 | (1.2–3.4) |