How is IVF Success Rate Calculated in Georgia? Reproductive Center Statistical Methods

Patient Inquiry: Why does one hospital claim a 65% success rate while another says 80%?

A 40-year-old woman with an AMH of 0.8 holds two brochures and asks: "How is the IVF success rate in Georgia actually calculated? Why are the numbers so different?" The discrepancy lies in different calculation methods—some statistics are based on the under-35 age group, some are calculated per transfer cycle, some only count the clinical pregnancy rate (seeing a gestational sac on ultrasound), while others count up to live birth (taking a baby home).

I. Core Calculation Methods for Success Rate

The IVF success rate in Georgia is mainly divided into the following four statistical categories. When patients see a number, they must first clarify which type it is:

Reproductive centers in Georgia often highlight the "clinical pregnancy rate per transfer cycle for women under 35" in their marketing, whereas the cumulative live birth rate better reflects the patient's true probability of benefit.

II. Why Do Different Hospitals Calculate Different Numbers?

Reasons include:

• Different Denominators: Some centers only count "final transfer cycles," excluding cancelled cycles; others count "all cycles that started ovarian stimulation."
• Population Selection: Some institutions only count cycles without severe male factors, advanced age, or PGT-A screening.
• Embryo Transfer Strategy: The statistical scope differs between single embryo transfer and double embryo transfer.
• Follow-up Completeness: Whether final delivery is tracked; patients lost to follow-up may be excluded or counted as failures.

An "80% success rate" is meaningless for a 42-year-old woman with low ovarian reserve.

III. Gender Differences Across Age Groups: Success Rate Curve

Data from Georgian reproductive centers show:

• ＜35 years: Live birth rate per transfer cycle ~45%~55%, cumulative live birth rate up to 70%~80%
• 35~37 years: Live birth rate ~35%~45%, cumulative live birth rate 55%~65%
• 38~40 years: Live birth rate ~25%~35%, cumulative live birth rate 40%~50%
• 41~42 years: Live birth rate ~15%~25%, cumulative live birth rate 25%~35%
• ＞42 years: Live birth rate below 10%, most rely on egg donation

Male factors have a smaller impact, but a sperm DNA fragmentation rate >30% can reduce implantation rates.

IV. How Do Doctors View It? — The Real Decision-Making Logic

When calculating the success rate for an individual patient, reproductive doctors in Georgia consider:

• Age: The most significant factor; the rate of chromosomal aneuploidy in eggs increases exponentially with age.
• Ovarian Reserve: AMH and antral follicle count determine the number of eggs retrieved; retrieving ≥10 eggs usually results in a live birth rate 2~3 times higher than retrieving <5 eggs.
• Embryo Chromosomes: After PGT-A screening, transferring euploid embryos can increase the live birth rate to 50%~70% (age-dependent).
• Previous Failure History: Recurrent implantation failure requires investigation for intrauterine adhesions, chronic endometritis, immune factors, etc.

Doctors do not give patients a single "success rate number" but rather inform them, "Based on your condition, the expected live birth rate per transfer cycle is approximately X%."

V. Most Easily Overlooked Details: Calculation Cycles and Frozen Embryo Transfers

Most patients assume "one egg retrieval equals one cycle." In actual calculations:

• Fresh Transfer: Transfer on day 3 or day 5 after egg retrieval.
• Frozen Embryo Transfer: Thawed and transferred the following month or several months later.

Some centers in Georgia combine all transfers (fresh + frozen) from one "ovarian stimulation" into a "cumulative live birth rate," while others only count single transfers. Patients should clarify this to avoid misunderstandings.

VI. Common Pitfalls: Marketing Numbers vs. Actual Expectations

• Pitfall 1: Only Looking at the Best Group The advertised "85% success rate" often only applies to patients under 30 using donor eggs.
• Pitfall 2: Confusing Pregnancy Rate with Live Birth Rate The clinical pregnancy rate is 10~20 percentage points higher than the live birth rate (including biochemical pregnancies and early miscarriages).
• Pitfall 3: Assuming Good Morphology Means Normal Chromosomes Without PGT-A Many centers in Georgia do not mandate PGT, but a good blastocyst morphology does not guarantee chromosomal normality.

Patients should request the center's raw live birth rate data "by age group + first IVF cycle" rather than approximate figures.

VII. How to Obtain Real Success Rate Data in the Actual Process?

1. Request the hospital's ART report for the past year (must include all ovarian stimulation cycles, transfer cycles, clinical pregnancies, and live births).
2. Confirm the statistical scope: Does the denominator include cancelled cycles? Is it only for women under 35?
3. Request data segmented by age (e.g., <35, 35-37, 38-40…).
4. Ask if there is third-party certification (e.g., ESHRE, CDC ART report).

VIII. Special Situations: Success Rates After Egg Donation and PGT-A

In Georgia, the live birth rate per single transfer for donor egg cycles (eggs from healthy young women) can reach 60%~70%, close to that of naturally conceiving women of the same age. For euploid embryo transfers after PGT-A screening, regardless of age, the live birth rate is approximately 50%~65% (depending on embryo quality).

However, if the patient has uterine abnormalities, endometrial thickness <7mm, or untreated adenomyosis, the success rate may decrease by 10~20 percentage points.

IX. Answers to Frequently Asked Questions

• Q: How does the IVF success rate in Georgia compare to that in my home country?
  A: It is necessary to compare live birth rates for the same age group and same embryo strategy. Some centers in Georgia may have advantages for older patients due to the prevalence of PGT-A and the legality of egg donation, but there is no unified third-party report.
• Q: Why do I know someone who succeeded on their first try in Georgia, while another person failed after three attempts?
  A: Individual differences are vast, depending on age, ovarian function, sperm quality, embryo chromosomes, uterine environment, and other factors.
• Q: If a blood HCG test is positive 11 days after transfer, but a miscarriage occurs later, is that considered a success?
  A: It counts as a success for the clinical pregnancy rate (if a gestational sac is seen on ultrasound), but not for the live birth rate. Therefore, patients should prioritize the live birth rate.

X. Practitioner's Observation (From an Overseas Coordinator's Perspective)

Among the over 200 patients I assisted who traveled to Georgia between 2023 and 2024, most misinterpreted "success probability" as "the chance of taking a baby home after one egg retrieval." In reality, only women under 35 with AMH >2ng/ml and no pelvic pathology come close to this expectation. For those over 35, it is advisable to be mentally and financially prepared for "possibly needing 2~3 ovarian stimulation cycles." Measuring with cumulative live birth rate is more reasonable.

Risk Reminder

Any Georgian institution claiming "guaranteed success" or a "95% success rate" is suspected of false advertising. The success rate of assisted reproduction cannot exceed the natural cycle limit (the upper limit for live birth rate per single transfer for women under 50 is approximately 60%). When choosing a center, verify the latest reports from the Ministry of Health or international reproductive societies, and do not accept verbal promises.

Timing Planning Reminder

Success rate statistics require a sufficient sample size (generally ≥200 cycles to be meaningful). Do not be misled by single-month data or small sample sizes. It is usually more reliable to look at rolling data from the past 12 months.

Special Population Reminder

Although patients with Polycystic Ovary Syndrome (PCOS) may retrieve many eggs, egg maturity and embryo quality can be affected. Assessment should be combined with AMH and endocrine status. For patients with endometriosis, even if they are young, the live birth rate may be lower than that of peers without endometriosis.

Doctor's Advice

Instead of obsessing over a "success rate number," it is better to undergo a comprehensive fertility evaluation. Before starting treatment in Georgia, complete basic checks such as AMH, karyotype, hysteroscopy, and sperm DNA fragmentation. Then discuss individualized expectations with your doctor. The cumulative live birth rate from one complete cycle (ovarian stimulation + all transfers) is the most valuable reference indicator.