| Parameters | ORa (CI à 95%) | p-value |
| Number of previous CS | ||
| One | 0.97 (0.43 - 2.17) | 0.956 |
| Two | 1 | |
| Water sac | ||
| Broken | 1 | |
| Intact | 5.65 (1.82 - 17.56) | <0.001 |
| Type of breakage | ||
| Tempestive | 1 | |
| Intempestive | 5.65 (1.82 - 17.56) | <0.001 |
| Appearance of amniotic fluid | ||
| Meconial | 1 | |
| Opalescent | 5.64 (1.81 - 17.55) | 0.002 |
| Prognosis of delivery | ||
| Poor | 1 | |
| Good | 3.63 (1.61 - 8.21) | <0.001 |
| Uterine height (cm) | ||
| Abnormal | 1 | |
| Normal | 6.10 (2.55 - 14.53) | <0.001 |
| Cervical dilatation | ||
| 1 - 3 | 1.64 (0.73 - 3.67) | 0.224 |
| ≥4 | 1 |