Table 1 Characteristics of the pregnant women and their infants at birth

Birth weight (grams)^a

3542

Birth length (cm)^a

50

Gestational age at delivery (days)

280

Gestational age T1 (days)

76

Gestational age T3 (days)

234

Maternal s-25OHD T1 (nmol/L)

64

Maternal s-25OHD T3 (nmol/L)

75

N (%)

Male gender of infant^a

976 (49.8)

Small for gestational age (weight or length)

93 (4.5)

Low birth weight (< 2500 g)

58 (2.8)

Preterm delivery (< 37 weeks)

78 (3.8)

Spontaneous preterm delivery (< 37 weeks)

55 (2.7)

Pregnancy loss

97 (4.7)

Intrauterine fetal death (≥ 22 weeks)

9 (0.5)