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| VARIABLES | GROUP |
|---|---|
| Age (years) | 33.8 ± 4.4 |
| BMI (Kg/m2) | 22.1 (22.4–24.6) |
| Ethnic origin | |
| caucasian | 10541 (99.4%) |
| asiatic | 42 (0.4%) |
| African | 22 (0.2%) |
| Smoker | 498 (4.7%) |
| Primipara | 4772 (45%) |
| Gestational age (weeks) | 22.4 ±1.87 |
Data are median (IQR), number (%), or mean ±SD
