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Table 1 Cohort characteristics for the HIF3A.1 and HIF3A.2 samples

From: Early-life determinants of hypoxia-inducible factor 3A gene (HIF3A) methylation: a birth cohort study

Characteristics HIF3A.1 sample n = 490 HIF3A.2 sample n = 938
Maternal
  Mean (SD) Mean (SD)
 Age at conception (years) 31.7 (4.4) 31.4 (4.7)
 Pre-pregnancy BMI (kg/m2) 25. (5.1) 25.3 (5.3)
  n (%) n (%)
 Smoked during pregnancy (any) 59 (12.0) 146 (15.6)
 Gestational diabetes 17 (3.9) 40 (5.0)
 Pre-eclampsia 17 (3.5) 27 (2.9)
Infant
  Mean (SD) Mean (SD)
 Gestational age (weeks) 39.5 (1.4) 39.5 (1.4)
 Birth weight (g) 3548.5 (500.0) 3559.6 (496.3)
 Birth weight z-score 0.4 (0.9) 0.4 (0.9)
 Triceps+subscapular sum (mm) 9.7 (2.1) 9.9 (2.2)
  n (%) n (%)
 Sex (male) 241 (49.2) 482 (51.4)
  1. SD standard deviation