Social & Preventive Medicine 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 💡 Explanation Which of the following is not true about expected date of delivery (EDD)? ✓ Correct Answer: D. Standard deviation around EDD is 3 weeks