Comparison of fetal Doppler flow abnormalities, gestational age at their onset, and interval between onset and birth.

The analysis covers all subjects, including the in utero deathsAC: abdominal circumference, UAD: umbilical artery Doppler, F: female, M: male, d: daysComposite "UAD abnormalities" criterion: any UAD abnormality, including abnormal UAD with positive diastolic flow and absent or reverse diastolic. Calculation of interval until birth: number of days from the abnormal Doppler findings to the birth.Comparison of fetal Doppler flow abnormalities, gestational age at their onset, and interval between onset and birth.