League tables

The success rates of different IVF clinics

For the past few years some countries have started to publish annually the success rates of their IVF centres. These include the HFEA annual report in the United Kingdom and SART annual report in the United States. However, patients are advised to contact clinics directly for further information and for their most recent results.

In our views, such publications have resulted in improving the pregnancy and live-birth rates in many centres over the last few years and have given infertile couples the opportunity to choose between different clinics. Infertile couples are entitled to know about the success rates of the different clinics.

The disadvantages of such league tables include:

• The league tables present out of date data
• League tables do not take into account many of the factors that may affect the success rates such as patient age, cause of infertility, duration of infertility, previous pregnancy and live birth, the number of embryos replaced, the cycle number etc.
• Lack of auditing of the data (no methods of verification).
• It is difficult to compare the success rates in different countries. There should be a clear definition of clinical pregnancy, e.g. in the United Kingdom the diagnosis of clinical pregnancy is only made after detection of fetal heartbeats by ultrasound scan.

Reporting live birth rates per treatment cycle started or per embryo transfer should be applied whenever possible to express success rates after IVF treatment.

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