Last in vitro fertilisation results published, how many embryos wasted?
The European Society of Human Reproduction and Embryology (ESHRE) has published the results for assisted reproduction for the year 2009. The study included data from 34 countries, 1,005 clinics and 537,463 treatment cycles: 135,621 in vitro fertilisation (IVF) and 266,084 intracytoplasmic sperm injection (ICSI).
In 21 countries where all clinics reported to assisted reproduction registers, a total of 399,020 cycles were performed. The total population of these 21 countries is 373.8 million inhabitants, so the prevalence is 1,067 cycles per million inhabitants.
The pregnancy rate for IVF was 28.9% per cycle commenced and 32.9% per transfer. These percentages for ICSI were 28.7% and 32.0%, respectively.
When frozen embryos were thawed and transferred, the pregnancy rate was 20.9%.
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