2007 ART Report Introduction to the 2007 National Report
Data provided by U.S. clinics that use assisted reproductive technology (ART) to treat infertility are a rich source of information about the factors that contribute to a successful ART treatment—the delivery of a live-born infant. Pooling the data from all reporting clinics provides an overall national picture that could not be obtained by examining data from an individual clinic.
A woman’s chances of having a pregnancy and a live birth by using ART are influenced by many factors, some of which are patient-related and outside a clinic’s control (e.g., the woman’s age, the cause of infertility). Because the national data set includes information on many of these factors, it can give potential ART users an idea of their average chances of success. Average chances, however, do not necessarily apply to a particular individual or couple. People considering ART should consult their physician to discuss all the factors that apply in their particular case.
The data for this national report come from the 430 fertility clinics in operation in 2007 that provided and verified data on the outcomes of all ART cycles started in their clinics. The 142,435 ART cycles performed at these reporting clinics in 2007 resulted in 43,412 live births (deliveries of one or more living infants) and 57,569 infants.
The national report consists of graphs and charts that use 2007 data to answer specific questions related to ART success rates. These figures are organized according to the type of ART procedure used. Some ART procedures use a woman’s own eggs, and others use donated eggs or embryos. (Although sperm used to create an embryo also may be either from a woman’s partner or from a sperm donor, information in this report is presented according to the source of the egg.) In some procedures, the embryos that develop are transferred back to the woman (fresh embryo transfer); in others, the embryos are frozen (cryopreserved) for transfer at a later date. This report includes data on frozen embryos that were thawed and transferred in 2007.
The national report has five sections:
- Section 1 (Figures 1 through 4) presents information from all ART procedures reported.
- Section 2 (Figures 5 through 41) presents information on the ART cycles that used only fresh embryos from nondonor eggs or, in a few cases, a mixture of fresh and frozen embryos from nondonor eggs (101,897 cycles resulting in 82,347 transfers).
- Section 3 (Figures 42 and 43) presents information on the ART cycles that used only frozen embryos from nondonor eggs (23,133 cycles resulting in 21,265 transfers).
- Section 4 (Figures 44 through 48) presents information on the ART cycles that used only donated eggs or embryos (17,405 cycles resulting in 15,954 transfers).
- Section 5 (Figures 49 through 64) presents trends in the number of ART procedures and success rates over the past 10 years, from 1998 through 2007.