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Table 1 Characteristics of the study samples

From: Betamethasone administration during pregnancy is associated with placental epigenetic changes with implications for inflammation

  Betamethasone administration group (BET group, n = 52) Control group (n = 84) p valuea
Mean age of pregnant person in years (SD) 28.46 (6.24) 29.60 (5.51) 0.28
Ethnicity non-European (%) 3 (5.8%) 7 (8.3%) 1.00
Smoking during pregnancy (% yes) 14 (26.92%) 18 (21.42%) 0.60
Mean BMI before pregnancy (SD) 24.30 (5.17) 23.81 (4.21) 0.58
Mean time between BET administration and birth in days (SD) 67.38 (29.87) up to 7 days: 1 7–28 days: 4 28–56 days: 14 over 56 days: 33 NA NA
Mean gestational age at birth in weeks (SD) 38.03 (2.10) 38.23 (1.88) 0.56
Preterm birth (before week 37) 17 (32.69%) 17 (20.42%) 0.15
Delivery mode: C-section 11 (21.15%) 24 (28.57%) 0.44
Labor 49 (94.23%) 72 (85.71%) 0.21
Parity 1.65 (1.02) 1.97 (1.41) 0.13
Birth weight in grams 3069 (539) 3198 (436) 0.15
Sex (% male) 24 (46.15%) 46 (54.76%) 0.42
  1. The table refers to samples which provide information on phenotypes and methylation levels
  2. SD standard deviation
  3. aNominal p value from Chi-square test (categorical variables) or t test (quantitative variables)