At 35years Maternal age-related risk for Down syndrome in singleton pregnancy at midtrimester is: (A) 1 in 31, (B) 1 in 69, (C) 1 in 149, (D) 1 in 250
Answer is D. Maternal Age-Related Risk for Down Syndrome at Midtrimester in Singleton PregnanciesAgeMidtrimester351/250371/149401/69411/53421/41431/31441/25451/19(Ref: William's Obstetrics; 25th edition)