| Obstetrical characteristics | Odds Ratio | 95% | P-Value |
| Gestite |
|
|
|
| Pauci geste/Multi geste | 9.8784 | 2.851 | 0.0003 |
| Primigeste/Multi geste | 1.9776 | 4.0805 | 0.0001 |
| Prenatal consultation |
|
|
|
| 1 - 3 | 0.3018 | 0.0646 | 0.1279 |
| 4 or more | 0.5944 | 0.3071 | 0.1227 |