Is the Due Date Accurate?
Disease description:
I’ve just found out I’m pregnant and have had a B-ultrasound. The doctor told me my due date—how accurate is the estimated due date?
Doctor's answer (1)
Dr. Zhang Jianhai
The estimated date of delivery (EDD) refers to the anticipated date when a pregnant woman will give birth. It is a clinically calculated result used to estimate the timing of delivery, with an accuracy rate of approximately 80%. However, delivery may still occur earlier or later than the EDD. Pregnancy typically lasts about 40 weeks, and healthcare providers usually calculate the EDD based on the first day of the woman’s last menstrual period.
