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) |