What is the risk of downs syndrome in a 35-year-old pregnant woman?
Age of the motherRisk of Down&;s syndrome351 in 250361 in 192371 in 149381 in 115391 in 89401 in 69Reference: William's obstetrics; 25th edition; Chapter 14; Prenatal Diagnosis
1 in 75
1 in 100
1 in 250
1 in 1000
General obstetrics