Do ART success rates differ among women of different ages?
A woman's age is the most important factor affecting the chances of a live birth when her own eggs
are used. The diagram below shows percentages of pregnancies, live births, and singleton live births for
women of different ages who had ART procedures using fresh nondonor eggs or embryos in 2007.
Percentages of ART cycles resulting in live births and singleton live births are different because
of the high percentage of multiple-infant deliveries counted among the total live births. The
percentage of multiple-infant births is particularly high among women younger than 35. Among women
in their 20s, percentages of ART cycles resulting in pregnancies, live births, and singleton live
births were relatively stable; however, percentages declined steadily from the mid-30s onward.
(chart courtesy: The National Center for Chronic Disease Prevention (CDC))