Estimate your 10-year risk of experiencing a cardiovascular event.
Male
Female
Yes
No
Yes
No
Your 10-year cardiac risk will be displayed here.
Understanding Cardiac Risk
This calculator estimates your 10-year risk of experiencing a major cardiovascular event (like a heart attack or stroke). It's based on a simplified model using key risk factors. It's important to remember that this is an estimate, and a healthcare professional can provide a more accurate assessment based on your complete medical history.
Factors Used:
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 is a major risk factor. This is the top number in a blood pressure reading.
Total Cholesterol: Higher levels can increase risk.
HDL Cholesterol: Often called "good" cholesterol. Higher levels are protective.
Smoking: Smoking is a potent risk factor for heart disease.
How it Works (Simplified Logic):
This calculator uses a general approach to estimate risk, often inspired by established risk assessment tools like the Framingham Risk Score or ASCVD Risk Estimator. The exact calculation involves complex formulas that assign points or weights to each risk factor. Generally:
Each risk factor (age, blood pressure, cholesterol levels, diabetes, smoking) contributes to a baseline risk score.
The higher the value for negative factors (e.g., age, systolic BP, total cholesterol, lower HDL), the higher the risk score.
Positive factors (like being female or having higher HDL) can lower the risk score.
These scores are then converted into a percentage probability of having a cardiovascular event within the next 10 years.
Disclaimer: This calculator is for informational purposes only and does not constitute medical advice. Consult with your doctor for personalized health assessments and guidance.
function calculateCardiacRisk() {
var age = parseFloat(document.getElementById("age").value);
var gender = document.getElementById("gender").value;
var systolicBloodPressure = parseFloat(document.getElementById("systolicBloodPressure").value);
var cholesterolTotal = parseFloat(document.getElementById("cholesterolTotal").value);
var cholesterolHDL = parseFloat(document.getElementById("cholesterolHDL").value);
var isDiabetic = document.getElementById("isDiabetic").value;
var isSmoker = document.getElementById("isSmoker").value;
var resultElement = document.getElementById("result");
resultElement.innerHTML = "Your 10-year cardiac risk will be displayed here.";
resultElement.style.color = "#004a99";
// Basic validation
if (isNaN(age) || age <= 0 ||
isNaN(systolicBloodPressure) || systolicBloodPressure <= 0 ||
isNaN(cholesterolTotal) || cholesterolTotal <= 0 ||
isNaN(cholesterolHDL) || cholesterolHDL = 30 && age = 35 && age = 40 && age = 45 && age = 50 && age = 55 && age = 60 && age = 65 && age = 70) riskScore += 9;
} else { // female
if (age >= 30 && age = 35 && age = 40 && age = 45 && age = 50 && age = 55 && age = 60 && age = 65 && age = 70) riskScore += 9;
}
// Systolic Blood Pressure points (example ranges, simplified – assuming untreated)
if (systolicBloodPressure = 120 && systolicBloodPressure = 130 && systolicBloodPressure = 140 && systolicBloodPressure = 160
if (gender === "male") riskScore += 4; else riskScore += 3;
}
// Total Cholesterol points (example ranges)
if (cholesterolTotal = 160 && cholesterolTotal = 200 && cholesterolTotal = 240 && cholesterolTotal = 280
if (gender === "male") riskScore += 4; else riskScore += 3;
}
// HDL Cholesterol points (example ranges)
if (cholesterolHDL >= 60) riskScore += 0;
else if (cholesterolHDL >= 50 && cholesterolHDL = 40 && cholesterolHDL <= 49) {
if (gender === "male") riskScore += 2; else riskScore += 1;
} else { // < 40
if (gender === "male") riskScore += 3; else riskScore += 2;
}
// Diabetes penalty
if (isDiabetic === "yes") {
if (gender === "male") riskScore += 5; else riskScore += 3;
}
// Smoking penalty
if (isSmoker === "yes") {
if (gender === "male") riskScore += 4; else riskScore += 2;
}
// — Map Risk Score to Percentage —
// This mapping is highly simplified and illustrative. Real scores use exponentials.
var riskPercentage;
if (gender === "male") {
if (riskScore <= 5) riskPercentage = 1;
else if (riskScore <= 7) riskPercentage = 2;
else if (riskScore <= 9) riskPercentage = 3;
else if (riskScore <= 11) riskPercentage = 4;
else if (riskScore <= 13) riskPercentage = 5;
else if (riskScore <= 15) riskPercentage = 7;
else if (riskScore <= 17) riskPercentage = 9;
else if (riskScore <= 19) riskPercentage = 11;
else if (riskScore <= 21) riskPercentage = 13;
else if (riskScore <= 23) riskPercentage = 16;
else if (riskScore <= 25) riskPercentage = 20;
else if (riskScore <= 27) riskPercentage = 24;
else if (riskScore <= 29) riskPercentage = 28;
else if (riskScore <= 31) riskPercentage = 32;
else riskPercentage = 35; // Or higher
} else { // female
if (riskScore <= 3) riskPercentage = 1;
else if (riskScore <= 5) riskPercentage = 2;
else if (riskScore <= 7) riskPercentage = 3;
else if (riskScore <= 9) riskPercentage = 4;
else if (riskScore <= 11) riskPercentage = 5;
else if (riskScore <= 13) riskPercentage = 6;
else if (riskScore <= 15) riskPercentage = 8;
else if (riskScore <= 17) riskPercentage = 10;
else if (riskScore <= 19) riskPercentage = 13;
else if (riskScore <= 21) riskPercentage = 16;
else if (riskScore <= 23) riskPercentage = 20;
else if (riskScore <= 25) riskPercentage = 25;
else if (riskScore <= 27) riskPercentage = 30;
else if (riskScore <= 29) riskPercentage = 35;
else riskPercentage = 40; // Or higher
}
// Display result
resultElement.innerHTML = "Your estimated 10-year cardiac risk: " + riskPercentage + "%";
resultElement.style.color = "#28a745"; // Success green
}