What about success rates of IVF?

Overall, success rates for IVF have steadily improved over the last ten years. Birth rates for IVF vary according to the expertise of the centers practicing this technique. However, centers in Europe have reported pregnancy rates after one cycle of IVF equal or superior to 25%. In 1993, the French IVF registry (FIVNAT) reported a pregnancy rate of 25.4% per embryo transfer on a total of 23,025 oocytes retrieved. Based on such results, after three to four cycles of IVF, a woman under 40 whose partner does not have any fertility problems could reasonably expect to give birth. Again, in general, success rates may vary from one center to another, since they are influenced not only by the level of expertise of the medical team but also by the characteristics of the patients treated. A clinic treating a large number of women over 40 is likely to report lower success rates than a clinic having a majority of patients under 35.

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