Table 1.
Prepregnancy and pregnancy characteristics stratified according to maternal preeclampsia (PE).
| Characteristic | Women without PE (n = 1,533,916) |
Women with PE (n = 29,710) |
p |
|---|---|---|---|
| Age, years | 30 (28–30) | 31 (28–34) | <0.0001 |
| Advanced age, >35 years | 213,048 (13.89%) | 6026 (20.28%) | <0.0001 |
| Prepregnancy HTN | 41,363 (2.70%) | 3312 (11.15%) | <0.0001 |
| Prepregnancy DM | 59,882 (3.90%) | 2172 (7.31%) | <0.0001 |
| Primiparity | 804,510 (52.45%) | 19,805 (66.66%) | <0.0001 |
| Cesarean section | 535,393 (34.90%) | 17,615 (59.29%) | <0.0001 |
| Preterm birth | 36,567 (2.38%) | 5636 (18.97%) | <0.0001 |
| Neonatal sex, male | 792,136 (51.64%) | 14,841 (49.95%) | <0.0001 |
| Birth weight, kg | 3.2 (3–3.5) | 3.0 (2.5–3.3) | <0.0001 |
| LBW | 51,104 (3.33%) | 7337 (24.70%) | <0.0001 |
| LGA | 62,590 (4.08%) | 1077 (3.63%) | <0.0001 |
Data are presented as medians with interquartile ranges or n (%) values. Abbreviations: HTN, hypertension; DM, diabetes mellitus; LBW, low birth weight; LGA, large for gestational age.