IVF Success Rates at Bourn Hall
IVF success can be measured in different ways, depending on which part of the treatment journey you are looking at. The charts on this page are designed to explain IVF success clearly, simply, and transparently, while reflecting how IVF works in real life.
Who are these success rates based on?
The data shown here come from people who started IVF treatment at Bourn Hall in 2022.
Because IVF treatment often continues over time, especially when frozen embryos are available, we follow outcomes from these 2022 treatment starts through subsequent embryo transfers and related cycles up to 2025, where relevant.
This allows us to show what IVF can realistically achieve over the full course of treatment, rather than stopping the analysis too early and missing later pregnancies from the same IVF cycle.
Chance of having a baby from one egg collection
This chart shows the chance of having a baby from one egg collection, including all fresh and frozen embryo transfers created from that egg collection.
It focuses on outcomes after eggs have been collected and embryos exist, because pregnancy is only possible from this point onwards.
Live birth rates after one IVF cycle (one collection of eggs) by female age group
In simple terms, this chart answers:
“If embryos are created from an egg collection, what is the chance they will eventually lead to a baby?”
Some IVF cycles do not result in embryos suitable for transfer. These cycles are not included in this chart, because no pregnancy can occur without an embryo. This allows the results to focus on outcomes once embryo creation has been achieved.
What does this statistic mean for you?
- If you are a woman aged under 35 years, you have a 58% chance of having a baby after a single IVF cycle
- If you are 35-37 years old, you have a 49% chance of having a baby after a single IVF cycle
- If you are 38-39 years old, you have a 32% chance of having a baby after a single IVF cycle
Chance of a baby within one year for those who continue treatment
This chart looks at how quickly pregnancy can be achieved.
It shows the chance of becoming pregnant within one year of starting IVF, where that pregnancy goes on to result in a live birth, among people who continue treatment after an initial embryo transfer.
Ongoing pregnancy within one year by female age group
This chart answers a different question:
“If I continue with IVF treatment, what is the chance I will become pregnant within a year in a way that leads to a baby?”
People who stop treatment after a single unsuccessful transfer are not included in this chart. This helps separate biological potential from personal, medical, or practical reasons for pausing or stopping treatment.
What does this statistic mean for you?
- If you are a woman aged under 35 years and you continue treatment with Bourn Hall, you have a 72% chance of getting pregnant (pregnancy seen on scan) within one year
- If you are 35-37 years old and you continue treatment with Bourn Hall, you have a 64% chance of getting pregnant (pregnancy seen on scan) within one year
- If you are 38-39 years old and you continue treatment with Bourn Hall, you have a 58% chance of getting pregnant (pregnancy seen on scan) within one year
- If you are a female aged over 40 and you continue treatment with Bourn Hall, you have about a 50% chance of getting pregnant within one year
Why do the two charts show different success rates?
The two charts answer different questions, so they include different groups of patients.
- Chart 1 focuses on outcomes once embryos exist.
- Chart 2 focuses on time to pregnancy among people who continue treatment.
Together, they give a more complete and honest picture of IVF success at different stages of the journey.
Counting one baby per IVF journey
Book a consultation
Everyone we see is unique and your specific circumstances will affect the way in which you can start your family. That’s why we’d prefer to really get to know you before talking about your personal chances of fulfilling your dream of parenthood.
Our success rate data
We decided to present these important statistics across the group of Bourn Hall clinics, because we have established they all perform in a similar way. Our uniform success rates across the Bourn Hall group are evidence of the consistent and high standard of care we give to all our patients.
We know that understanding success rate statistics can be difficult so, to help you, we have provided a breakdown of all our data by clinic, including: live birth after one egg collection; clinical pregnancy rates; live birth rates per embryo transfer; and live birth rates per embryo transferred.
Independent guidance and advice
The Human Fertilisation and Embryology Authority (HFEA) has guidelines for how results should be reported. It also reports on how a clinic’s results compare with the national averages. We have included our most recent results here on our website but there is also useful independently verified information on the HFEA website regarding how to interpret success rates and the factors to consider in choosing a clinic for your IVF treatment.
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