Placebo Cholecalciferol (1000 IU/day)
N 352 352
Maternal characteristics
Age (years), mean (SD) 31.1 (5.0) 31.0 (4.9)
Ethnicity, % Caucasian 95.8% 95.2%
Parity, % nulliparous 43.0% 44.1%
Smoking in early pregnancy, % 6.9% 5.3%
Educational attainment ≥ A level, % 77.0% 78.9%
BMI (kg/m2), median (IQR) 25.4 (22.8,29.4) 24.6 (22.2,28.2)
Sum of all skinfold thicknesses (mm), mean (SD) 81.3 (27.2) 77.8 (28.4)
Early pregnancy 25(OH)D (nmol/l), mean (SD) 44.7 (16.2) 46.0 (16.4)
Late pregnancy 25(OH)D (nmol/l), mean (SD) 42.4 (20.8) 67.4 (19.9)
Change in 25(OH)D from early to late pregnancy (nmol/l), mean (SD) -2.0 (20.7) 21.4 (21.9)
Offspring characteristics
Male, (%) 50.1% 55.7%
Birth weight (g), mean (SD) 3543.3 (494.9) 3508.9 (536.2)
Age last breastfed (months), median (IQR) 4.0 (0,9.0) 5.0 (1.0,10.0)