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

From: Trajectory of vitamin D status during pregnancy in relation to neonatal birth size and fetal survival: a prospective cohort study

  Mean SD
Birth weight (grams)a 3542 537.7
Birth length (cm)a 50 2.3
Gestational age at delivery (days) 280 12.4
Gestational age T1 (days) 76 13.8
Gestational age T3 (days) 234 12.9
Maternal s-25OHD T1 (nmol/L) 64 24.4
Maternal s-25OHD T3 (nmol/L) 75 34.4
  N (%)  
Male gender of infanta 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)  
  1. T1 first trimester, T3 third trimester, 25OHD 25-hydroxyvitamin D
  2. aLive born infants only