Table 2 Baseline characteristics at 12–17 weeks gestation
Characteristics | Control group (n = 122) |
|---|---|
Maternal age (y) mean ± SD | 31.3 ± 4.3 |
University education n (%) | 91 (74.6) |
Pre-pregnancy BMI (kg/m2) mean ± SD | 25.3 ± 4.6 |
Pre-pregnancy BMI (kg/m2) category n (%) | |
 Underweight (< 18.5) | 2 (1.6) |
 Normal weight (18.5–24.9) | 62 (50.8) |
 Overweight (25.0–29.9) | 37 (30.3) |
 Obese (≥30) | 21 (17.2) |
Race/ethnicity n (%) | |
 European Descent | 107 (87.7) |
 Mixed/Other | 13 (10.7) |
 Unknown | 2 (1.6) |
Total family income n (%) | |
 < $45,000 | 10 (8.2) |
 $45,000–$74,999 | 25 (20.5) |
 > $75,000 | 78 (63.9) |
 Unknown | 9 (7.4) |
Married/living with significant other n (%) | 114 (93.4) |
Nulliparous n (%) | 56 (45.9) |