Table 2 Neonatal characteristics by parity
Nulliparous | Parous | Total | Nulliparous vs. parous p-valuea | ||
|---|---|---|---|---|---|
1 to 3 | 4 or more | ||||
Study population | 8742 | 5703 | 676 | 15,121 | |
Gender, N (%) | 0.0703 | ||||
Male | 4551 (52.1) | 2914 (51.1) | 335 (49.6) | 7800 (51.6) | |
Female | 4191 (47.9) | 2789 (48.9) | 341 (50.4) | 7321 (48.4) | |
Gestational age, N (%) | 0.0072 | ||||
Preterm (< 37 weeks) | 992 (11.3) | 674 (11.8) | 105 (15.5) | 1771 (11.7) | |
Term (≥ 37 weeks) | 7750 (88.7) | 5029 (88.2) | 571 (84.5) | 13,350 (88.3) | |
Birth weight categories, N (%) (g) | < 0.0001 | ||||
< 1500 | 72 (0.8) | 40 (0.7) | 4 (0.6) | 116 (0.8) | |
1500–2000 | 470 (5.4) | 175 (3.1) | 28 (4.1) | 673 (4.5) | |
2001–2500 | 2054 (23.5) | 922 (16.2) | 101 (14.9) | 3077 (20.3) | |
≥ 2501 | 6146 (70.3) | 4566 (80.1) | 543 (80.3) | 11,255 (74.4) | |
Mean (SD) | 2738.7 (445.8) | 2840.4 (427.5) | 2907.4 (478.6) | 2784.6 (444.0) | < 0.0001 |
Neonatal deaths < 28 days, N (Rate /1000) | 242 (27.7) | 98 (17.2) | 14 (20.7) | 354 (23.4) | 0.0006 |