Which of the following is not true about expected date of delivery (EDD)?: (A) Less than 5% deliver on the expected date of delivery, (B) 50% deliver within one week, (C) 80% deliver within two weeks, (D) Standard deviation around EDD is 3 weeks
Answer is D. Ans. d. Standard deviation around EDD is 3 weeks (Ref Dutta's (Jaypee) / 73)Expected Date of Delivery (EDD)Only 4% of births take place on EDDAbout 50% deliver within 1 week on either side of EDD80% deliver about 2 weeks before to 1 week after EDDStandard deviation is of 13 days(90% of babies will be born within three weeks of their EDD. and 21% will be born within three days of it)