Table 1.
Maternal and Newborn Demographics by Hypertensive Statusa
| Normotensive Pregnancy (n = 605) |
Transient Hypertension of Pregnancy (n = 171) |
Preeclampsia (n = 187) |
Pb | |
|---|---|---|---|---|
| Maternal age, y | 23.9 ± 5.6 | 24.5 ± 5.7 | 26.8 ± 5.9 | <.01 |
| Maternal prepregnancy body mass index, kg/m2 | 25.1 ± 6.1 | 26.9 ± 6.6 | 27.5 ± 6.7 | <.01 |
| Race, % black | 29.1 | 29.4 | 19.1 | .02 |
| Smoking, % | 32.5 | 20.0 | 20.2 | <.01 |
| Average blood pressure before 20 weeks of gestation, mm Hg | 112.7 ± 7.7/68.8 ± 5.6 | 117.7 ± 8.6/71.7 ± 6.5 | 118.1 ± 9.8/72.6 ± 7.1 | <.01 |
| Average blood pressure at delivery, mm Hg | 119.4 ± 9.7/72.0 ± 7.0 | 148.0 ± 11.1/86.3 ± 7.4 | 156.4 ± 13.6/92.0 ± 9.5 | <.01 |
| Gestational age at delivery (range), wk | 39.0 ± 2.2 (22.4-42.4) | 38.7 ± 1.8 (32.1-43.1) | 36.2 ± 3.6 (25.4-41.8) | <.01 |
| Infant birth weight, g | 3299 ± 592 | 3181 ± 638 | 2508 ± 928 | <.01 |
| Infant birth weight centile, % | 50.5 ± 28.2 | 45.8 ± 30.3 | 37.3 ± 29.0 | <.01 |
| Maternal plasma uric acid at delivery, mg/dL | 4.9 ± 1.3 | 5.1 ± 1.2 | 5.7 ± 1.3 | <.01 |
| Median maternal plasma cellular fibronectin (range), μg/mLc | 17.3 (11.9-26.5) | 17.3 (12.2-29.1) | 30.4 (18.2-43.2) | <.01 |
a
Data are presented as the mean ± SD or percentage, unless otherwise indicated.
b
Overall χ2 or analysis of variance comparing the 3 groups.
c
Median (interquartile range), compared using Wilcoxon rank sum.