The risk of mongolism in a mother at the age 20 years is 1 : 000. what should be ratio when she is 45 yeas old :

Ans. is None According to 2/e high risk - Risk of mongolism is 1:32 while 3/e, p 33 says risk varies between 1:15 to 1:23 depending on the gestational age. The nearest answer is 1:50, so we are taking it as the correct option.