It is important to know that fertility clinics don’t have to measure their success rates using the same data. There are so many variables involved in the IVF process:
Age of the female partner
Quality of the sperm
Quality and number of eggs retrieved
Quality and number of embryos
The amount of times embryos are implanted before a pregnancy
Reason and duration of infertility
To allow the fairest and for best comparison we have presented rates according to the age of the female as this has a significant impact on likely success of treatment.