Success rates vary and depend on many factors. Factors that affect the success rate:
The U.S. Center for Disease Control (CDC) collects success rates on ART for some fertility clinics. Due to the Wyden Act, passed by Congress in the 1990s, it requires all IVF clinics to report their pregnancy rates to the CDC. According to the 2003 CDC report on ART, the average percentage of ART cycles that led to a healthy baby were as follows:
- 37.3% in women under the age of 35
- 30.2% in women aged 35-37
- 20.2% in women aged 37-40
- 11.0% in women aged 41-42
ART can be expensive and time-consuming. But it has allowed many couples to have children that otherwise would not have been conceived. The most common complication of ART is multiple fetuses.
