Estimated coefficients and 95% confidence interval for the association between pregnancy complications and size and velocity parameters by cohort.

aEstimates derived from model adjusted for gender and gestational age fitted on the sample of data with no missing values for the following maternal variables: height, age, parity, educational level,pre-pregnancy BMI, smoking during pregnancy, gestational diabetes and gestational hypertensionbAdjusted by sex, gestational age and maternal height, age, parity, educational level, pre-pregnancy BMI and smoking during pregnancy