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Success Rates

The data presented here represents the number of positive pregnancy tests at The Evewell between October 2018 and October 2019. We have not differentiated between success rates of IVF and ICSI cycles due to the similarity of outcome.

 

Information on success rates is of limited value in comparing centres and choosing where to seek treatment. The HFEA is a source of national information through its ‘Choose a Fertility Clinic’ function which can be found online. For further information and comparisons for these results and advice on choosing a clinic, please see the following HFEA link: www.hfea.gov.uk/choose-a-clinic/learn-about-choosing-a-clinic

Fresh Cycles: Positive Pregnancy Rate per Embryo Transfer

Under 35 35-37 38-39 40-42 43-44 Over 44
(7/11) (9/14) (4/7) (5/14) (2/11) (1/13)
64% 64% 57% 36% 18% 8%

All Frozen Cycles: Positive Pregnancy Rate per Embryo Transfer (including PGS cycles)

Under 35 35-37 38-39 40-42 43-44 Over 44
(18/23) (20/27) (11/14) (10/18) (0/2) (0/1)
78% 74% 79% 56% 0% 0%

*only one transfer event

PGS Frozen Cycles: Positive Pregnancy Rate per Embryo Transfer

Under 35 35-37 38-39 40-42 43-44 Over 44
(8/8) (11/12) (7/8) (5/8) (0/0) (0/0)
100% 92% 88% 63% N/A N/A

PGS success rates are more influenced by other factors affecting fertility rather than simply age. There should be little difference in PGS success rates in all the age groups once normal embryos are transferred. Our view is that breaking the rates down by age is not necessarily a true indicator of success. PGS cycles may be better presented as a percentage across all ages.

PGS All ages
86%

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