Since 1992, federal law requires all IVF clinics in the United States to report their outcomes regarding success rates and multiple births. This law has helped our field improve its standards and help lower the multiple birth rate but more work still needs to be done (i.e single embryo transfer). Keep in mind that the latest data is from 2010 because it takes 9-10 months to get live birth data and then another year to process and publish the data. You can read the latest report from the CDC past the jump.
