In the source dataset, the Donor group represents the combined assessment of oocyte and embryo donation records, while the IVF group represents the combined assessment of IVF using own oocytes and sperm donation records.
REAL CLINICAL DATA · FROM PATIENT RECORDS
IVF and Donor Group Success Rates
We compare first-transfer, cumulative positive pregnancy, cumulative live birth and age breakdowns for IVF and donor groups within the same record system.
✓
We compare actual clinical data within their own record groups.
Because IVF and donor groups have different biological and clinical characteristics, the results should not be interpreted as a direct quality ranking.
Main outcome
REAL CLINICAL DATA
Our Cumulative Success Rates
We show positive pregnancy and live birth outcomes together for both clinical groups.
Donor Group
Cumulative positive pregnancy
90.7%
IVF Group
Cumulative positive pregnancy
89.7%
Donor Group
Cumulative live birth
73%
IVF Group
Cumulative live birth
68%
Group comparison
Cumulative Outcomes in IVF and Donor Groups
See the difference between first-transfer and cumulative outcomes for both groups at the same time.
Donor Group
90.7%
Cumulative positive pregnancy
73% cumulative live birth
First-transfer positive pregnancy: 77%
IVF Group
89.7%
Cumulative positive pregnancy
68% cumulative live birth
First-transfer positive pregnancy: 72.7%
From first transfer to cumulative outcome
Change Across the Success Journey
Donor Group
77%First transfer
→
Cumulative
90.7%After a maximum of 3 ETs
+13.7 points
IVF Group
72.7%First transfer
→
Cumulative
89.7%After a maximum of 3 ETs
+17.0 points
Age breakdown
Age-Adjusted Cumulative Positive Pregnancy Rates
The source group structure is preserved; age breakdowns are shown using statistical balancing to reduce small-sample effects.
Small-sample adjustment in age rates
When patient/ET counts in an age group are low, a raw result can look misleadingly sharp, such as 100%. In this chart, age-based rates are balanced toward the relevant group's overall cumulative outcome according to sample size.
Main clinical outcomes were not changed
Donor group cumulative positive pregnancy 90.7%, IVF group 89.7%; cumulative live birth rates are respectively 73% and 68% and are preserved exactly as the actual main group outcomes.
Appropriate comparison
Why Should IVF and Donor Groups Not Be Interpreted in the Same Way?
IVF treatments may use the patient's own oocytes, while the donor group may involve different oocyte, sperm or embryo sources. Patient age, oocyte age, treatment indication and embryological characteristics therefore affect comparison.
The percentages on this page are presented to make the groups' recorded clinical outcomes transparent; they do not determine on their own which treatment is right for an individual patient.
Special donor group
Oocyte and Embryo Donation Age 45+
● Average female age: 48
72.5%Positive pregnancy on first attempt
84.5%Cumulative positive pregnancy
64%Cumulative live birth
These are clinical outcomes for this specific patient group and are not a guarantee of individual results.
Transparent data presentation
How Do We Evaluate the Results?
01First transfer
Clinical outcome of the first attempt.
02Cumulative pregnancy
Total positive pregnancy outcome across the treatment journey.
03Live birth
Assessed separately from pregnancy outcome.
04Group structure
IVF and donor record groups are not mixed.
Frequently asked questions
Questions about IVF and Donor success outcomes
The Donor group's cumulative positive pregnancy rate after a maximum of 3 embryo transfers is 90.7%.
The IVF group's cumulative positive pregnancy rate after a maximum of 3 embryo transfers is 89.7%.
The cumulative live birth rate used is 73% in the Donor group and 68% in the IVF group.
To a limited extent. Patient profiles, gamete sources and treatment indications can differ between the groups. The two percentages should not be interpreted on their own as a quality ranking of a clinic or treatment.
Some age bands have very small samples and the raw rate may appear as 100%. In the web chart, rates are statistically balanced toward the relevant main group's overall cumulative result to reduce small-sample effects.
The balanced rate is calculated as (n × raw rate + 20 × overall group rate) / (n + 20). The overall reference is 90.7% for Donor and 89.7% for IVF. This process does not change the main clinical totals.
In the oocyte and embryo donation subgroup with an average female age of 48, positive pregnancy on the first attempt is 72.5%, cumulative positive pregnancy is 84.5%, and cumulative live birth is 64%.
Pregnancy can be lost at different stages between a positive pregnancy and live birth. Live birth is therefore a later endpoint and may be expected to be lower than the positive pregnancy rate.
Success data centre