Q: What is the frequency of twins and triplets for pregnancies resulting from IVF?
A: According to the 2005 CDC data on IVF in-vitro fertilization, about 1 in 3 IVF cycles resulted in a pregnancy. And of these pregnancies, about 1 in 3 pregnancies were twins, triplets or higher: Of these pregnancies, 28.5% were twins (25 times higher than natural pregnancies), and 4.4% were triplets (300+ times higher than natural pregnancies).
Multiples Pregnancy: Twins and Triplets
What are the Odds of Having Twins?
Multiple Births: Risks to the Child