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Maternal Characteristics at Baseline According to Randomization Group
| Placebo | 1000-IU/d Cholecalciferol | |
|---|---|---|
| n | 422 | 407 |
| Gestation (wk), mean (SD) | 15.9 (1.5) | 15.9 (1.5) |
| Maternal age (y), mean (SD) | 30.7 (5.4) | 30.7 (5.0) |
| Nulliparous (%) | 44.8 | 42.7 |
| Current smoker (%) | 7.7 | 7.7 |
| BMI (kg/m2), median (IQR) | 25.4 (22.7–29.7) | 24.6 (22.2–28.6) |
| Height (cm), mean (SD) | 165.6 (6.6) | 165.5 (6.3) |
| White ethnicity (%) | 94.8 | 95.6 |
| 25(OH)D (nmol/L), median (IQR) | 44.4 (33.2–57.0) | 45.7 (34.3–57.8) |
