This calculator provides an estimated success rate for Intrauterine Insemination (IUI) based on several key factors. Please note that this is a generalized estimate and individual success rates can vary significantly based on personal medical history and specific circumstances. Always consult with your fertility specialist for personalized advice.
Understanding the Factors
The success rate of Intrauterine Insemination (IUI) is influenced by a combination of maternal age, ovarian response, sperm quality, and uterine conditions. This calculator uses these factors to provide an estimated chance of success:
Maternal Age: Fertility naturally declines with age, and this is a significant factor in IUI success rates. Younger women generally have higher success rates.
Number of Mature Follicles: A greater number of mature follicles typically indicates a better response to ovulation induction medications and a higher chance of conception.
Sperm Motility: This refers to the percentage of sperm that are moving effectively. Higher motility means more sperm are capable of reaching and fertilizing the egg.
Previous Failed IUIs: A history of failed IUI cycles can sometimes indicate underlying factors that may affect future success.
Endometrial Thickness: A healthy, adequately thickened uterine lining is crucial for implantation. A thickness of 8mm or more is generally considered optimal.
Remember, this calculator is a tool for general information. Your fertility specialist will consider all these factors, along with your unique medical history, to provide the most accurate prognosis.
function calculateIUISuccessRate() {
var age = parseFloat(document.getElementById("age").value);
var follicles = parseFloat(document.getElementById("follicles").value);
var spermMotility = parseFloat(document.getElementById("spermMotility").value);
var previousIUI = parseFloat(document.getElementById("previousIUI").value);
var endometrialThickness = parseFloat(document.getElementById("endometrialThickness").value);
var resultElement = document.getElementById("result");
resultElement.innerHTML = ""; // Clear previous results
// Basic input validation
if (isNaN(age) || isNaN(follicles) || isNaN(spermMotility) || isNaN(previousIUI) || isNaN(endometrialThickness)) {
resultElement.innerHTML = "Please enter valid numbers for all fields.";
return;
}
// Realistic bounds for inputs (can be adjusted based on clinical data)
if (age 50) {
resultElement.innerHTML = "Age is outside typical reproductive years for IUI consideration. Consult your doctor.";
return;
}
if (follicles 10) { // Assuming a reasonable upper limit for follicles
resultElement.innerHTML = "Number of follicles seems unusually high or low. Please verify.";
return;
}
if (spermMotility 100) {
resultElement.innerHTML = "Sperm motility must be between 0% and 100%.";
return;
}
if (previousIUI < 0) {
resultElement.innerHTML = "Previous failed IUIs cannot be negative.";
return;
}
if (endometrialThickness 20) { // Typical range for endometrial thickness
resultElement.innerHTML = "Endometrial thickness seems outside the typical range. Please verify.";
return;
}
// Simplified model for success rate estimation.
// This is a hypothetical model and not based on specific clinical data.
// Real-world IUI success rates are complex and influenced by many more variables.
var baseRate = 0.15; // A hypothetical baseline success rate of 15% per cycle
// Adjustments based on factors
var ageFactor = 1;
if (age >= 35 && age = 40) {
ageFactor = 0.4;
}
var follicleFactor = 1 + (follicles * 0.03); // Slightly increasing rate per follicle
if (follicles === 0) follicleFactor = 0.1; // No follicles means very low chance
var motilityFactor = 1 + ((spermMotility – 30) / 100 * 0.2); // Modest increase for better motility
if (spermMotility < 10) motilityFactor = 0.5;
var previousIUIFactor = 1 – (previousIUI * 0.05); // Decreasing rate with more previous failures
if (previousIUIFactor < 0.1) previousIUIFactor = 0.1; // Floor for the factor
var thicknessFactor = 1;
if (endometrialThickness = 12) {
thicknessFactor = 1.1; // Slight bonus for thicker lining
}
var estimatedSuccessRate = baseRate * ageFactor * follicleFactor * motilityFactor * previousIUIFactor * thicknessFactor;
// Cap the success rate at a realistic maximum (e.g., 30-35% per cycle is often cited as a high success rate)
if (estimatedSuccessRate > 0.35) {
estimatedSuccessRate = 0.35;
}
// Ensure a minimum realistic rate if factors are extremely poor but still calculable
if (estimatedSuccessRate < 0.01) {
estimatedSuccessRate = 0.01;
}
var successPercentage = (estimatedSuccessRate * 100).toFixed(2);
resultElement.innerHTML = "Based on your inputs, your estimated IUI success rate per cycle is approximately: " + successPercentage + "%";
}
.iui-calculator-wrapper {
font-family: sans-serif;
max-width: 700px;
margin: 20px auto;
padding: 20px;
border: 1px solid #e0e0e0;
border-radius: 8px;
background-color: #f9f9f9;
}
.iui-calculator-wrapper h2 {
text-align: center;
color: #333;
margin-bottom: 20px;
}
.calculator-inputs {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
gap: 15px;
margin-bottom: 20px;
}
.input-group {
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flex-direction: column;
}
.input-group label {
margin-bottom: 5px;
font-weight: bold;
color: #555;
}
.input-group input[type="number"] {
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 1rem;
}
.iui-calculator-wrapper button {
display: block;
width: 100%;
padding: 12px 20px;
background-color: #4CAF50;
color: white;
border: none;
border-radius: 4px;
font-size: 1.1rem;
cursor: pointer;
transition: background-color 0.3s ease;
margin-bottom: 20px;
}
.iui-calculator-wrapper button:hover {
background-color: #45a049;
}
.calculator-result {
margin-top: 20px;
padding: 15px;
background-color: #e7f3fe;
border: 1px solid #b3d7ff;
border-radius: 4px;
text-align: center;
font-size: 1.1rem;
}
.calculator-result strong {
color: #333;
}
.calculator-explanation {
margin-top: 30px;
border-top: 1px solid #e0e0e0;
padding-top: 20px;
font-size: 0.95rem;
color: #555;
line-height: 1.6;
}
.calculator-explanation h3 {
color: #333;
margin-bottom: 10px;
}
.calculator-explanation ul {
padding-left: 20px;
margin-bottom: 15px;
}
.calculator-explanation li {
margin-bottom: 8px;
}