borderline significantp = 0.062
Association between maternal pre-pregnancy BMI, placental EtP, and cord blood metabolic biomarkers The difference in mean log-transformed placental EtP values between the groups of mothers with underweight/normal pre-pregnancy BMI (0.13 ± 1.08) kg/m 2 and overweight/obese pre-pregnancy BMI (-0.15 ± 1.10) kg/m 2 was borderline significant (p = 0.062).