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Demographic and obstetric characteristics for the study groups
| Overall (n = 1713) | Group 1: primiparas (n = 523) | Group 2: multiparas (n = 656) | Group 3: grand multiparas (n = 534) | p value | |
|---|---|---|---|---|---|
| Maternal age, Ya | 28.7 ± 6.0 | 23.8 ± 4.0 | 27.7 ± 4.0 | 34.7 ± 4.2 | < 0.001 |
| Gestational week at labora | 39.9 ± 1.2 | 40.0 ± 1.2 | 39.8 ± 1.2 | 39.7 ± 1.2 | 0.005 |
| Newborn birth weight (grams)a | 3399 ± 447 | 3290 ± 432 | 3416 ± 452 | 3483 ± 432 | < 0.001 |
a = Data are presented as mean ± SD
