How Many Multiple Births are Caused by Fertility Treatments?
In general, the chances of having a multiple birth are increased if you undergo fertility treatment. However, not all infertility treatments are the same. For instance, undergoing IUI without ovulation stimulation is not nearly as likely to result in a multiple birth as IUI with Clomid. IVF is especially known for resulting in twin and multiple pregnancies because multiple embryos are transferred. However, as ART techniques have improved, the number of transferred embryos necessary for pregnancy have decreased with many couples only having one or two embryos transferred instead of the four or five of yesteryear. That being said, in 2000, the number of twins conceived in the United States using ART was 444.6 per every 1000 live birth. The number of triplets was significantly lower, only 98.7 out of every 1000 live births. The percent of multiple births resulting from all ART treatments was 13.6%. Selective Reduction Because of the increased risk of complications to both mother and baby,
