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2022 National Retrieval and Transfer Tables
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National Summary Report
All SART Member Clinics
Preliminary National Summary Report for 2022
389993 Total Cycles
- Due to the COVID-19 pandemic, some embryo transfers were delayed, leading to a higher number of cycles without a transfer during the 12 months after the retrieval cycle, thereby impacting overall live birth success rates per cycle.
LIVE BIRTHS PER INTENDED EGG RETRIEVAL (ALL EMBRYO TRANSFERS)
What is the chance of live birth with an intended egg retrieval?
| Age of woman | < 35 | 35 - 37 | 38 - 40 | 41 - 42 | > 42 |
|---|---|---|---|---|---|
| Number of cycle starts | 52189 | 34543 | 34894 | 18364 | 13198 |
| Singleton Births | 41.3 % | 29.7 % | 18.2 % | 9.1 % | 3.1 % |
| Live Births | 43.1 % | 31.0 % | 19.0 % | 9.4 % | 3.2 % |
LIVE BIRTHS PER INTENDED EGG RETRIEVAL (FIRST EMBRYO TRANSFER)
What is the chance of live birth with an intended egg retrieval and the first embryo transfer, if any?
| Age of woman | < 35 | 35 - 37 | 38 - 40 | 41 - 42 | > 42 |
|---|---|---|---|---|---|
| Number of cycle starts | 52190 | 34543 | 34893 | 18364 | 13199 |
| Singleton Births | 34.4 % | 25.6 % | 16.4 % | 8.5 % | 2.9 % |
| Live Births | 35.8 % | 26.6 % | 17.1 % | 8.8 % | 3.0 % |
LIVE BIRTHS PER THAW (SECOND EMBRYO TRANSFER)
What is the chance of Live Birth from Frozen Transfer from the second intended transfer after retrieval?
| Age of woman | < 35 | 35 - 37 | 38 - 40 | 41 - 42 | > 42 |
|---|---|---|---|---|---|
| Number of thaw procedures | 9742 | 5195 | 3241 | 878 | 317 |
| Singleton Births | 42.9 % | 41.4 % | 38.5 % | 35.4 % | 23.7 % |
| Live births | 45.7 % | 43.5 % | 40.3 % | 36.6 % | 25.2 % |
LIVE BIRTHS PER THAW (ADDITIONAL TRANSFERS/LONG TERM FREEZES)
What is the chance of Live Birth from Frozen Transfer, not including the first intended transfer or occurring more than 12 months after retrieval?
| Age of woman | < 35 | 35 - 37 | 38 - 40 | 41 - 42 | > 42 |
|---|---|---|---|---|---|
| Number of thaw procedures | 20386 | 15111 | 11995 | 4928 | 4089 |
| Singleton Births | 45.4 % | 44.8 % | 43.4 % | 40.9 % | 33.9 % |
| Live births | 48.1 % | 46.8 % | 45.0 % | 42.3 % | 35.2 % |
LIVE BIRTHS PER NEW PATIENT
What is the chance of live birth doing IVF as a new patient in a clinic?
| Age of woman | < 35 | 35 - 37 | 38 - 40 | 41 - 42 | > 42 |
|---|---|---|---|---|---|
| Number of patients | 39446 | 21504 | 18165 | 7988 | 5242 |
| Singleton Births | 49.2 % | 38.6 % | 26.1 % | 13.7 % | 4.6 % |
| Live Births | 51.2 % | 40.0 % | 27.1 % | 14.2 % | 4.7 % |
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Loading ...insert_chart Understand This Report
This report is designed to provide patients with outcomes that reflect the way infertility is treated through IVF. By tracking the outcome of cycles initiated for egg retrieval over a two-year period, this report accounts for both fresh and frozen embryo transfers resulting from the egg retrieval cycle. We hope this will help you better understand the expected outcomes from Assisted Reproductive Technologies (ART). If you want to get a more personalized prognosis for your chances, please visit
the SART patient predictor.
The SART Clinic Summary Report (CSR) allows patients to view national and individual clinic IVF success rates. The data presented in this report should not be used for comparing clinics. Clinics may have differences in patient selection and treatment approaches which may artificially inflate or lower pregnancy rates relative to another clinic. Please discuss this with your doctor.
What is the difference between a Preliminary and Final CSR and why are some cycles delayed?What is a cycle?
A cycle is counted when a woman has started medications for the purpose of having an ART procedure. In the case of a “natural” cycle when no medications are used, the cycle starts with the first day of a woman’s menstrual cycle when she is planning to have an ART procedure done that month. The cycle is counted if an egg retrieval is performed or if the cycle is cancelled before the egg retrieval. If several cycles are performed to bank eggs or embryos, each will be counted in the denominator when calculating the pregnancy rate. For example, if three successive ovarian stimulation cycles are performed with the purpose of accumulating or “banking” embryos for one embryo transfer later that year that results in a delivery, the delivery rate would be 1/3 (33%). We feel that counting each cycle and not just focusing on the embryo transfer more accurately reflects the treatment burden and costs the patient has endured.
What is considered a “success”?
In this report, we have emphasized the delivery of a child (rather than a positive pregnancy test) as the main outcome of interest, since this is the outcome patients desire. We also have emphasized singleton deliveries since twin and higher order multiple pregnancies have a higher risk of premature delivery and have increased medical complications during the pregnancy and after delivery, often with infants requiring stays in the neonatal intensive care unit. Cycle success is measured by the live birth rate with a singleton delivery occurring after 37 weeks of gestation being the optimal outcome of IVF cycle. The percentage of triplet, twin and singleton births contributing to the live birth rate are provided for each cycle group and a summation of all deliveries (singletons and multiple births) is provided in the report. We have also reported the risk of premature delivery by dividing the live births into three groups including delivery occurring before 32 weeks of gestation (very pre-term), 32-37 weeks of gestation (pre-term) or reaching term (>37 weeks).
Outcomes are divided by several factors including patient age and source of the eggs whether autologous (originating from the female patient) or donor eggs. These are important prognostic factors and by separating the data, you can get a better idea of both national and individual clinic experience by these factors. The report contains additional filters for infertility diagnosis, stimulation type and other treatment details are available for patients to review the number of procedures and outcomes for specific patient groups and treatments.
Patient’s Own EggsAll Embryo Transfers
Also called the "cumulative live birth rate", this reflects the chance of achieving a live birth after a fresh or frozen embryo transfer within a year of cycle initiated for egg retrieval. The live birth may have been the result of the first embryo transfer (fresh or frozen) or a frozen embryo transfers that occurs after the first attempted transfer (secondary or subsequent transfer). The 2014 reporting year was the first year that subsequent cycles were linked to the egg retrieval cycles to generate the cumulative live birth rate per egg retrieval cycle.
First Embryo Transfer
A cycle is initiated for egg retrieval. This cycle is concluded with the outcome of the first embryo transfer (fresh or frozen embryos) or it has been determined that embryo transfer will not be performed within a year of the egg retrieval cycle start. This is also called the "Primary Outcome".
If an embryo transfer occurred, the FIRST EMBRYO TRANSFER may be attributed to either a fresh or frozen embryo transfer. If you wish to review primary outcomes from fresh embryo transfers, use the FILTER feature and exclude frozen embryo transfers. If you wish to review Primary Outcomes from cycles where no fresh embryo transfer occurred and the outcome is from the 1st frozen embryo transfer, use the FILTER feature and include only frozen embryo transfers.
Live Births Per Second or Later Embryo Transfer (2021 and Earlier)
Also called the "Subsequent Outcome," this table includes any cycle involving the thawing of eggs or embryos after the Primary Outcome has been determined. This is the cycle that is started either after the first embryo transfer has occurred or if more than one year has passed since the egg retrieval and this cycle is the first egg or embryo thaw.
Second Embryo Transfer (2022 and Later)
Also called the "Secondary Outcome," this table includes cycles involving the thawing of eggs or embryos for the second attempted transfer within 1 year of the initial retrieval cycle, after the Primary Outcome has been determined.
Live Births Per Additional Transfers/Long Term Freezes (2022 and Later)
Also called the "Subsequent Outcome," this table includes any cycle involving the thawing of eggs or embryos after the Primary or Secondary Outcome has been determined. This also includes cycles that are started either after the first and second embryo transfer has occurred or if more than one year has passed since the egg retrieval and this cycle is the first egg or embryo thaw, as well as cycles that do not have a linked retrieval entered in the system.
Live Births Per New Patient
The live birth rate per new patient includes the outcomes for patients who are new to an infertility center and starting their first cycle for retrieval of their own eggs during the reporting year.