Opening: Real Consultation Scenario
⚕ Real Consultation Scenario “Doctor, I saw online that your hospital has tens of thousands of successful cases. Is that true? Can you guarantee I’ll succeed on the first try?” — This is a question I hear every week in the clinic. As a reproductive medicine physician, I first need to clarify one thing: What standard is used to define a “successful case”?
1. Direct Answer: The Number of Success Cases Cannot Be Answered Directly
No legitimate assisted reproduction hospital in China can provide a vague “total number of successful cases.” The reasons are:
- The criteria for successful cases are not uniform — clinical pregnancy rate (gestational sac visible on ultrasound) and live birth rate (baby born successfully) can differ by 10%-15%.
- Patient age, etiology, and number of previous failures vary greatly, leading to significant differences in success rates. For example, the live birth rate for women under 35 can reach 50%-55%, while for those over 40, it may drop to 15%-20%.
- The number of cases published by hospitals is cumulative, but cumulative figures include data from different years and technological stages, offering limited reference value for individuals.
Therefore, directly asking “How many successful cases does the hospital have?” is meaningless. A more practical question is: “For me, what is the approximate success rate of treatment at this hospital?”
2. Doctor’s Perspective: How to Correctly Interpret Success Rate Data
Every day, I see patients coming to my office with screenshots on their phones showing “70% success rate at Center X.” There are three common misunderstandings here:
2.1 Different Denominators, Completely Different Results
Some hospitals count “transfer cycles,” including multiple transfers for the same patient; others count “oocyte retrieval cycles,” or even only “fresh embryo transfers.” What is more acceptable to patients is the “cumulative live birth rate per single oocyte retrieval cycle” (including fresh and frozen embryo transfers), which is usually about 10% higher than the single transfer rate.
2.2 Age Stratification Is Key
| Age Group | Live Birth Rate per Single IVF Transfer (Median in China) | Cumulative Live Birth Rate per Oocyte Retrieval Cycle |
|---|---|---|
| Under 30 | 47%-55% | 60%-70% |
| 31-34 years | 40%-48% | 55%-62% |
| 35-37 years | 33%-40% | 45%-55% |
| 38-40 years | 20%-28% | 30%-40% |
| 41-42 years | 10%-15% | 15%-25% |
| Over 43 years | <5% | <10% |
*Data refers to the range from public annual reports of multiple tertiary reproductive centers in 2023; individual results vary significantly.
2.3 Doctors Pay More Attention to “Cancellation Rate”
An often-overlooked indicator is the cycle cancellation rate (e.g., poor follicular development, no transferable embryos). Some hospitals, to beautify their data, pre-screen patients and only include those with good conditions in their statistics. Reputable centers will disclose the outcomes of all initiated cycles to patients, including cancelled cycles.
3. Differences by Age Group: Which Range Are You In?
In my clinic, age 35 is a clear dividing line. The decline in egg quality with age is not linear — after 35, the rate of chromosomal aneuploidy in eggs rises from about 20% to 40%-50%. This means:
- ≤35 years The reference value of success cases is highest; most hospitals publish live birth rates for this group.
- 36-39 years Focus on whether “preimplantation genetic testing for aneuploidy (PGT-A)” can reduce miscarriage rates.
- ≥40 years Simply looking at the “number of success cases” is almost useless; ovarian reserve (AMH, FSH, antral follicle count) must be assessed to determine if using one’s own eggs is suitable.
If a hospital only gives a vague “success rate of 60%,” be sure to ask: Which population does this figure refer to?
4. Differences Between Hospitals: Is the Data Transparent and Verifiable?
In the domestic assisted reproduction field, there are two types of institutions:
- Public tertiary reproductive centers (e.g., Peking University Third Hospital, Shanghai Ninth People’s Hospital, CITIC Xiangya) usually publish an “Assisted Reproductive Technology Data Report” annually, which can be verified on the website of the Maternal and Child Health Center of the Chinese Center for Disease Control and Prevention or their official sites. These data are reviewed by ethics committees and are relatively reliable.
- Private hospitals/reproductive clinics Some advertise “over ten thousand cumulative successful cases,” but often lack detailed breakdowns by age and number of transfers. My advice: Ask them to provide the “live birth rate calculated per oocyte retrieval cycle.” If they avoid this, be cautious.
Special Reminder: In 2020, the National Health Commission required all institutions performing assisted reproductive technology to report data to the “National Assisted Reproductive Technology Management Information System,” but some data is not fully open to the public. Patients can check whether an institution is qualified and its reported cycle numbers and pregnancy rate ranges (some provinces have made this public) through the “National Assisted Reproductive Technology Management Information System Official Website” or the local health commission’s website.
5. The Most Easily Overlooked Detail: “Live Birth” vs. “Clinical Pregnancy” in Success Case Definitions
In my consultations, I use a diagram to explain these two concepts:
- Clinical Pregnancy: Gestational sac and fetal heartbeat seen on ultrasound 30-35 days after transfer. 20%-25% of clinical pregnancies end in miscarriage (especially in older women or those with chromosomal abnormalities).
- Live Birth: Delivery of a live infant after 28 weeks of gestation. This is the internationally recognized ultimate indicator.
Many hospitals advertise “clinical pregnancy rate,” which can be 8-10 percentage points higher than the live birth rate. The miscarriage rate is what patients most easily overlook. Looking only at the clinical pregnancy rate can lead to overestimating one’s chances of success.
6. Common Pitfalls: Falling for “Guaranteed Success” or “High Success Rate” Promises
There are two common misleading practices in the assisted reproduction industry:
- “Guaranteed Success Packages” Costing hundreds of thousands of yuan, claiming a refund if unsuccessful. In practice, they often set strict conditions (e.g., AMH ≥1.5, age ≤35, no prior failure history), making very few people eligible. Refund terms usually hide traps like “processing fees” or “non-refundable incurred costs.”
- “Our hospital has over 100,000 successful cases” The cumulative number of cases refers to the total number of treatments for all patients since the hospital’s founding, including repeated egg retrievals and transfers for the same patient. For a first-time patient, this number is almost meaningless.
My advice: Don’t be attracted by any “absolute number.” Instead, request live birth rate data for the past three years, stratified by age and number of transfers. If they cannot provide it, or only give a single percentage, it indicates a lack of data transparency.
7. Frequently Asked Questions
Q1: Why do success rates vary so much between different hospitals for the same statement?
Besides differences in patient populations, statistical methods differ. For example, Hospital A might report “the rate of high-quality embryos after fertilization,” while Hospital B reports “the rate of positive blood test after transfer,” which can differ by 30%. Always ask: Which stage of success are you referring to?
Q2: Are the “Hospital Success Case Rankings” I see online reliable?
Most are not reliable. The state has not authorized any third-party organization to publish rankings. The success rate data of legitimate reproductive centers need to be verified with a large number of cases, and different centers have different areas of expertise (e.g., some specialize in polycystic ovary syndrome, others in egg activation for older women). Suggestion: Go directly to the center’s official website or ask to see the ethics committee-stamped annual report during your visit.
Q3: My doctor says I have endometriosis. Do I still have a chance?
The cumulative live birth rate for patients with endometriosis is affected, but it is not absolute. It depends on the size of the cysts, CA125 levels, whether surgery has been performed, and the pelvic environment. Many patients with endometriosis, after laparoscopic surgery to improve the pelvic environment, can achieve live birth rates close to those of age-matched controls. Don’t give up based on a diagnosis alone; ask your doctor for an individualized assessment.
8. Practitioner’s Observation: How to Obtain Real Data During a Visit
I participate in our department’s data review every week. Let me share some internal processes:
- At the first visit, don’t directly ask “How many successful cases do you have?” Instead, say, “Can you provide me with a pregnancy outcome report for the last two years, broken down by age group?” Reputable centers usually have this material.
- Pay attention to whether the receptionist can answer: “What is the approximate cumulative live birth rate for my situation (age + AMH + medical history)?” If they avoid specific numbers and just say “We are among the best in the country” or “Don’t worry,” it’s likely just talk.
- You can request direct communication with the attending physician. The doctor will usually estimate a range based on your basic condition, for example, “If the follicle count is more than 10, the expected chance of having a healthy child per egg retrieval cycle is 40-50%.” Although it’s a range, it’s much more realistic than a vague “80%.”
9. Risk Reminder
⚠️ Important Notice
Any plan claiming “100% success” or “unconditional full refund upon failure” does not conform to medical practice. Assisted reproduction is a medical procedure with individual differences and unpredictable risks. The number of successful cases is only a probability reference and should not be the sole basis for choosing a hospital. Be sure to pay attention to modifiable factors such as your ovarian function, uterine environment, and sperm quality, and choose a regular reproductive center approved by the National Health Commission.
Author: Deputy Chief Physician, Tertiary Reproductive Medicine Center | Review Basis: 2023 Consensus of the Special Symposium on Human Assisted Reproductive Technology Management. Data citation ranges have been anonymized and do not refer to any specific institution.
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