Table 1.
Characteristics of Mother–Child Pairs in the Boston Birth Cohort By Preeclampsia Status (n=1274)
| Variable, n (%)a | Normal | Preeclampsia | P Value |
|---|---|---|---|
| N | 1159 | 115 | |
| Maternal characteristics | |||
| Age at delivery, years, mean (SD) | 27.99 (6.31) | 29.12 (6.17) | 0.07 |
| Black race | 671 (57.9%) | 68 (59.1%) | 0.80 |
| Education level | 0.02 | ||
| Middle school or below | 318 (27.4%) | 21 (18.3%) | |
| High school | 417 (36.0%) | 56 (48.7%) | |
| College or above | 424 (36.6%) | 38 (33.0%) | |
| Nulliparous | 526 (45.4%) | 60 (52.2%) | 0.16 |
| Married | 362 (31.2%) | 40 (34.8%) | 0.58 |
| Smoking status during pregnancy | 0.09 | ||
| Never smoker | 929 (80.2%) | 99 (86.1%) | |
| Former smoker | 105 (9.1%) | 11 (9.6%) | |
| Current smoker | 125 (10.8%) | 5 (4.3%) | |
| Alcohol consumption during pregnancy | 108 (9.3%) | 7 (6.1%) | 0.18 |
| Prepregnancy BMI (kg/m2), median (IQR) | 24.88 (21.64, 29.18) | 26.58 (23.46, 31.62) | 0.003 |
| Pregestational/gestational diabetes mellitus | 123 (10.6%) | 18 (15.7%) | 0.25 |
| Offspring characteristics | |||
| Boys | 599 (51.7%) | 49 (42.6%) | 0.06 |
| Gestational age (wks), median (IQR) | 39.00 (37.29, 40.14) | 36.29 (32.57, 38.57) | <0.001 |
| Birth weight (kg), median (IQR) | 3.12 (2.67, 3.51) | 2.40 (1.50, 3.17) | <0.001 |
BMI indicates body mass index; IQR, interquartile range; SD, standard deviation.
a
Unless otherwise indicated.