Maternal characteristics | n (%) | Mean (SD) |
---|---|---|
Age (years) | Â | 28.78 (5.82) |
Pre-pregnancy body mass index (kg/m2) | Â | 23.07 (5.16) |
Parity | ||
 0 | 69 (34) |  |
 1 | 78 (38.4) |  |
  ≥ 2 | 56 (27.6) |  |
Serum vitamin D in the first trimestera | Â | 15.65 (7.06) |
 Deficient (< 20 ng/mL) | 152 (0.75) |  |
 Insufficient (20–29.99 ng/mL) | 43 (0.21) |  |
 Normal (≥ 30 ng/mL) | 8 (0.04) |  |
Serum ferritin in the first trimesterb | Â | 66.95 (53.48) |
 Hypoferritinemia (< 30 ng/mL) | 68 (33.5) |  |
 Normoferritinemia (≥30 ng/mL) | 135 (66.5) |  |
 Hemoglobin in the first trimesterc |  | 12.8 (1.98) |
 Anemia (< 11 g/dL) | 15 (7.4) |  |
 Normal (≥11 g/dL) | 188 (92.6) |  |
Gestational age at the third trimester ultrasonography (week) | Â | 31.67 (1.56) |
 Biparietal diameter (mm) |  | 79.82 (7.44) |
 Head circumference (mm) |  | 282.3 (32.84) |
 Abdominal circumference (mm) |  | 268.6 (23.32) |
 Femur length (mm) |  | 63.56 39.47) |