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Table 1 Subject characteristics by gestational hypertensive disorder (n = 3391)

From: Gestational hypertensive disorders and retinal microvasculature: the Generation R Study

  Normotensive pregnancy GH PE P value
  (n = 3183) (n = 145) (n = 63)  
Maternal characteristics (pregnancy)
 Age at enrollment (years) 30.1 (5.1) 30.4 (5.1) 29.4 (5.5) 0.44
 Gestational age at enrollment (weeks) 13.9 (10.9, 22.2) 13.4 (10.1, 22.9) 13.8 (10.3, 22.5) 0.15
 Height (cm) 166.6 (7.4) 168.0 (7.3) 165.3 (6.8) 0.03
 Pre-pregnancy weight (kg) 64.0 (50.0, 87.0) 70.0 (54.0, 114.4) 68.0 (53.2, 105.0) <0.001
 Pre-pregnancy body mass index (kg/m2) 22.7 (18.7, 31.5) 25.2 (20.0, 40.2) 24.4 (19.2, 37.2) <0.001
 Weight at enrollment (kg) 67.0 (52.8, 91.1) 75.0 (56.3, 112.0) 70.0 (52.0, 110.4) <0.001
 Systolic blood pressure at enrollment (mmHg) 114.8 (11.7) 126.0 (13.1) 120.4 (12.9) <0.001
 Diastolic blood pressure at enrollment (mmHg) 67.3 (9.0) 76.7 (11.3) 74.3 (9.9) <0.001
 Primiparous (no., %) 1894 (60.0) 110 (75.9) 51 (81.0) <0.001
 Non-European ethnicity (no., %) 1267 (40.8) 42 (29.0) 30 (47.6) 0.005
 Lower educational level (no., %) 272 (9.2) 11 (7.9) 6 (10.0) 0.02
 Smoking (no., %) 749 (26.6) 43 (32.1) 13 (21.3) 0.29
Pregnancy outcomes
 Gestational age at birth (weeks) 40.1 (37.1, 42.1) 40.1 (37.2, 42.1) 38.6 (30.9, 41.5) <0.001
 Birth weight (g) 3442.1 (539.8) 3432.8 (578.6) 2889.3 (877.4) <0.001
 Small for gestational age < p10 (no., %) 296 (9.3) 20 (13.8) 17 (27.0) <0.001
 Male sex (no., %) 1624 (51.0) 76 (52.4) 25 (39.7) 0.19
  1. Values are percentages for categorical variables, means (SD) for continuous variables with a normal distribution, or medians (90% range) for continuous variables with a skewed distribution. Differences in baseline characteristics were tested using Student’s t test, ANOVA, Kruskal-Wallis, and chi-square tests. Presented values are not imputed