Note: This is a statistical estimation based on historical clinical data. Individual results vary significantly based on clinic quality, egg health, and embryo grading.
Understanding IVF Success Rates
In Vitro Fertilization (IVF) success rates are influenced by a complex interplay of biological and clinical factors. While every patient's journey is unique, medical research has identified several key variables that statistically impact the likelihood of a live birth.
Key Factors Influencing Your IVF Rate
Maternal Age: This is the most significant predictor. Egg quality and quantity generally decline with age, particularly after the age of 35.
Reproductive History: Patients who have had a previous successful live birth typically show higher success rates in subsequent IVF cycles.
The Cause of Infertility: Conditions like PCOS or Male Factor infertility often have higher success rates compared to Diminished Ovarian Reserve or severe Endometriosis.
Cycle History: While a previous failed cycle doesn't mean success is impossible, multiple consecutive failed cycles may indicate underlying receptivity or genetic issues.
Typical Success Rate Benchmarks
According to national data from organizations like SART (Society for Assisted Reproductive Technology), the average live birth rates per egg retrieval for women using their own eggs are approximately:
Under 35: 45% – 50%
35-37: 35% – 40%
38-40: 20% – 25%
41-42: 10% – 15%
Over 42: <5%
Example Scenario
Consider a 32-year-old woman with unexplained infertility and no previous pregnancies. Her baseline success rate might start at roughly 46%. If she has already had one successful live birth, her predicted rate for the next cycle might increase to approximately 51% due to proven uterine receptivity.
function calculateIVFRate() {
var age = parseFloat(document.getElementById('patientAge').value);
var births = parseFloat(document.getElementById('prevPregnancies').value) || 0;
var failed = parseFloat(document.getElementById('failedCycles').value) || 0;
var diagnosis = document.getElementById('diagnosis').value;
var resultDiv = document.getElementById('ivfResult');
var displayValue = document.getElementById('ivfDisplayValue');
if (isNaN(age) || age 55) {
alert("Please enter a valid age between 18 and 55.");
return;
}
// Base Success Rate Calculation based on Age
var baseRate = 0;
if (age = 35 && age = 38 && age = 41 && age 12) birthModifier = 12; // Cap benefit
// Adjust for previous failed cycles (Negative indicator)
var failureModifier = failed * 3;
if (failureModifier > 15) failureModifier = 15; // Cap penalty
// Diagnosis modifiers
var diagModifier = 0;
if (diagnosis === "male") {
diagModifier = 2;
} else if (diagnosis === "pcos") {
diagModifier = 3;
} else if (diagnosis === "endometriosis") {
diagModifier = -4;
} else if (diagnosis === "diminished") {
diagModifier = -10;
} else if (diagnosis === "tubal") {
diagModifier = -2;
}
// Final Calculation
var finalRate = baseRate + birthModifier – failureModifier + diagModifier;
// Safety bounds
if (finalRate 85) finalRate = 85;
// Display result
displayValue.innerHTML = finalRate.toFixed(1) + "%";
resultDiv.style.display = "block";
// Smooth scroll to result
resultDiv.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}