Estimate your 10-year risk of experiencing a cardiovascular event (like heart attack or stroke).
Male
Female
Non-smoker
Smoker
No
Yes
Your 10-Year Risk: –%
Understanding Your Cardiac Risk
Cardiovascular diseases (CVDs), including heart attacks and strokes, remain leading causes of mortality worldwide.
Understanding your personal risk of experiencing such an event is a crucial step towards prevention and adopting a healthier lifestyle.
This Cardiac Risk Calculator provides an estimation of your 10-year risk based on several key factors.
How the Calculation Works (ASCVD Risk Estimator Plus Logic)
This calculator is based on the principles of the widely used ASCVD (Atherosclerotic Cardiovascular Disease) Risk Estimator Plus tool,
which predicts the 10-year risk of heart attack or stroke. The exact formulas are complex and proprietary to the original tool,
but they generally involve a weighted combination of the following risk factors:
Age: Risk increases significantly with age.
Gender: Historically, men have had a higher risk, though this gap narrows with age.
Systolic Blood Pressure: Higher blood pressure indicates greater strain on the heart and blood vessels. Treatment status (controlled/uncontrolled) is also a factor in more detailed calculators.
Total Cholesterol: High levels can contribute to plaque buildup in arteries.
HDL Cholesterol (High-Density Lipoprotein): Often referred to as "good" cholesterol, higher levels are generally protective. The ratio of total cholesterol to HDL is particularly important.
Smoking Status: Smoking is a major, modifiable risk factor that damages blood vessels and increases clotting.
Diabetes Status: Diabetes significantly elevates cardiovascular risk due to its effects on blood vessels and metabolism.
The calculator uses these inputs to generate a percentage, representing the likelihood of a major ASCVD event occurring within the next 10 years.
A higher percentage indicates a greater need for preventive measures and discussion with a healthcare provider.
Interpreting Your Results
The percentage generated by this calculator is an estimate. It is essential to discuss these results with your doctor. They can provide a more personalized assessment,
considering your full medical history, family history, and other potential risk factors not included here (like diet, physical activity, or specific medications).
Low Risk (< 7.5%): Generally considered low risk, but maintaining a healthy lifestyle is always recommended.
Borderline Risk (7.5% – 19.9%): May warrant closer monitoring and lifestyle modifications. Discuss with your doctor about potential preventive therapies.
Intermediate Risk (20% – …): Higher risk of a cardiovascular event. Aggressive lifestyle changes and potentially medication (like statins or blood pressure medication) are often recommended. Consult your physician immediately.
Disclaimer
This calculator is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
Never disregard professional medical advice or delay in seeking it because of something you have read on this website.
function calculateCardiacRisk() {
var age = parseFloat(document.getElementById("age").value);
var gender = document.getElementById("gender").value;
var systolicBloodPressure = parseFloat(document.getElementById("systolicBloodPressure").value);
var cholesterol = parseFloat(document.getElementById("cholesterol").value);
var hdlCholesterol = parseFloat(document.getElementById("hdlCholesterol").value);
var smokingStatus = document.getElementById("smokingStatus").value;
var diabetes = document.getElementById("diabetes").value;
var riskPercentage = 0;
// Basic validation
if (isNaN(age) || isNaN(systolicBloodPressure) || isNaN(cholesterol) || isNaN(hdlCholesterol) ||
age <= 0 || systolicBloodPressure <= 0 || cholesterol <= 0 || hdlCholesterol = 40 && age <= 80) {
score += (age – 40) * 0.5; // Example weighting
} else if (age 80) {
// Outside typical range for this model, might indicate very low/high risk
// For simplicity, we won't add a penalty/bonus but real models handle this.
}
// Gender factor
if (gender === "male") {
score += 10; // Male generally has higher baseline risk in many models
} else {
score += 5; // Female generally has lower baseline risk
}
// Systolic Blood Pressure factor (simplified)
// Assume moderate hypertension starts around 140 mmHg
if (systolicBloodPressure > 140) {
score += (systolicBloodPressure – 140) * 0.2; // Example weighting
} else if (systolicBloodPressure 5) { // Higher ratio indicates increased risk
score += (cholesterolRatio – 5) * 3; // Example weighting
}
if (cholesterol > 240) { // High total cholesterol
score += 5;
} else if (cholesterol < 160) {
// Low cholesterol might reduce risk
}
// Smoking factor
if (smokingStatus === "smoker") {
score += 15; // Smoking is a significant risk multiplier
}
// Diabetes factor
if (diabetes === "yes") {
score += 10; // Diabetes is a significant risk multiplier
}
// — Convert score to percentage —
// This conversion is highly model-dependent.
// This is a placeholder approximation. A real ASCVD calculator uses complex non-linear functions or look-up tables.
// For instance, a score of 30 might translate to a 20% risk, while a score of 50 might be 50%.
// The relationship is not strictly linear.
var estimatedRisk = 0;
if (score < 10) {
estimatedRisk = Math.max(1, Math.min(5, score * 0.5)); // Very low risk
} else if (score < 20) {
estimatedRisk = Math.max(5, Math.min(10, score * 0.75)); // Low to borderline
} else if (score < 30) {
estimatedRisk = Math.max(10, Math.min(20, score * 1.0)); // Borderline to intermediate
} else if (score 100) estimatedRisk = 100; // Cap at 100%
}
// Ensure risk is not negative and not above 100%
estimatedRisk = Math.max(0, Math.min(100, estimatedRisk));
document.getElementById("riskPercentage").innerText = estimatedRisk.toFixed(1) + "%";
}