From: Design and outline of the Healthy Pregnancy 4 All study
G4-cities | NETHERLANDS MINUS G4-CITIES | TOTAL | |
---|---|---|---|
No. of pregnancies during study period | 245445 (100.0) | 1338420 (100.0) | 1583865 (100.0) |
Parity | |||
Primiparous | 121592 (49.5) | 607953 (45.4) | 729545 (46.1) |
Multiparous | 123853 (50.5) | 730467 (54.6) | 854320 (53.9) |
Ethinicity | |||
Western | 139786 (57.0) | 1186772 (88.7) | 1326558 (83.8) |
Non-Western | 105659 (43.0) | 151648 (11.3) | 257307 (16.2) |
Maternal age | |||
< 20 years | 6987 (2.8) | 19861 (1.5) | 26848 (1.7) |
20-24 years | 34864 (14.2) | 127013 (9.5) | 161877 (10.2) |
25-29 years | 61354 (25.0) | 395138 (29.5) | 456492 (28.8) |
30-34 years | 85444 (34.8) | 535927 (40.0) | 621371 (39.2) |
≥ 35 years | 56796 (23.1) | 260481 (19.5) | 317277 (20.0) |
Socioeconomic ‘status score’ | |||
<p20 | 145367 (59.2) | 254607 (19.0) | 399974 (25.3) |
p20-p80 | 58641 (23.9) | 853074 (63.7) | 911715 (57.6) |
>p80 | 41437 (16.9) | 230739 (17.2) | 272176 (17.2) |
Neighbourhood | |||
Non-deprived | 165658 (67.5) | 1320392 (98.7) | 1486050 (93.8) |
Deprived | 79787 (32.5) | 18028 (1.3) | 97815 (6.2) |
Perinatal outcomes** | |||
Congenital anomalies | 5233 (2.1) | 33159 (2.5) | 38392 (2.4) |
Preterm birth | 15673 (6.4) | 81646 (6.1) | 97319 (6.1) |
Small for gestational age | 27724 (11.3) | 125175 (9.4) | 152899 (9.7) |
Apgar score <7 | 3385 (1.4) | 14818 (1.1) | 18203 (1.1) |
(5 minutes after birth) | |||
Any Big4** | 50267 (20.5) | 242697 (18.1) | 292964 (18.5) |
Fetal mortality† | 1478 (0.6) | 6718 (0.5) | 8196 (0.5) |
Intrapartum mortality | 458 (0.2) | 2126 (0.2) | 2584 (0.2) |
Neonatal mortality†† | 761 (0.3) | 3547 (0.3) | 4308 (0.3) |
Perinatal mortality‡ | 2697 (1.1) | 12391 (0.9) | 15088 (1.0) |