How to use
1. Select your sex (male or female). 2. Enter your age in years. The Framingham Risk Score is validated for ages 30 to 74. 3. Enter your total cholesterol in mg/dL and your HDL (high-density lipoprotein) cholesterol in mg/dL. These values come from a standard lipid panel blood test. 4. Enter your systolic blood pressure (the top number) in mmHg. 5. Check the box if you are currently on blood pressure medication. 6. Check the boxes if you are a current smoker or have been diagnosed with diabetes. 7. Click "Calculate Risk Score" to see your 10-year coronary heart disease (CHD) risk percentage, point total, and risk category.
About the Framingham Risk Score
The Framingham Risk Score is one of the most widely used tools in cardiovascular medicine for estimating a person's 10-year risk of developing coronary heart disease. It was developed from the landmark Framingham Heart Study, a long-running prospective cohort study that began in 1948 in Framingham, Massachusetts.
This calculator uses the ATP III (Adult Treatment Panel III) point-based scoring system published in 2001 by D'Agostino and colleagues. The ATP III version assigns points for six risk factors:
- **Age:** Older age carries progressively more points. Women receive negative points at younger ages reflecting their lower baseline risk before menopause. - **Total Cholesterol:** Higher total cholesterol increases risk, with age-adjusted point values because cholesterol's relative contribution to risk changes across decades. - **HDL Cholesterol:** Higher HDL ("good cholesterol") is protective and reduces your point total. An HDL of 60 mg/dL or above earns a negative point. - **Systolic Blood Pressure:** Higher systolic pressure increases risk. Whether your blood pressure is treated or untreated affects scoring because treated hypertension indicates an existing condition. - **Smoking:** Current smoking adds points because it is a major independent risk factor for cardiovascular disease. - **Diabetes:** Diabetes is independently associated with higher cardiovascular risk and adds points for both men and women.
Points are summed to produce a total score, which maps to an estimated 10-year CHD risk percentage using sex-specific risk tables.
Understanding your results
Your result is expressed as a percentage representing the estimated probability of a coronary heart disease event over the next 10 years.
**Risk categories (ATP III):** - **Low Risk (less than 10%):** Your current risk factor profile places you in the lower risk tier. Healthy lifestyle habits remain important for keeping risk low over time. - **Intermediate Risk (10–20%):** You have a moderate level of risk. This range is where lifestyle changes and possibly preventive medications are most commonly discussed with a healthcare provider. - **High Risk (greater than 20%):** Your estimated risk is equivalent to that of someone with established heart disease. This warrants prompt discussion with a healthcare provider.
The score is a population-level statistical estimate, not a personal prediction. Many people in the "high risk" group will not have a cardiac event, and vice versa. The score is most useful as a starting point for conversations about prevention.
Factors that affect cardiovascular risk but are not included in this score include family history of premature heart disease, obesity, physical inactivity, inflammation markers (like hsCRP), and kidney function. A complete cardiovascular risk assessment by a clinician considers all of these.
FAQs
Q: What is the Framingham Risk Score used for? A: The Framingham Risk Score estimates a person's 10-year probability of experiencing a coronary heart disease event, such as a heart attack. It is used by clinicians to guide decisions about lifestyle counseling and preventive treatments like statins or blood pressure medications.
Q: Why does the calculator only work for ages 30 to 74? A: The ATP III Framingham point tables were derived from data for adults aged 30 to 74. Outside this age range the tables are not validated and the estimated risk percentages would not be reliable.
Q: What cholesterol values do I need? A: You need your total cholesterol and your HDL cholesterol, both in mg/dL. These are standard measurements included in a lipid panel blood test ordered by your doctor or available through many health screening programs.
Q: Why does blood pressure treatment matter? A: Treated hypertension is scored differently from untreated hypertension of the same level because the presence of treatment indicates an established condition. The ATP III algorithm accounts for this distinction when assigning points.
Q: Is this the same as the ACC/AHA Pooled Cohort Equations? A: No. The ACC/AHA Pooled Cohort Equations (2013) are a newer cardiovascular risk tool that estimates 10-year atherosclerotic cardiovascular disease (ASCVD) risk, which includes stroke in addition to coronary heart disease. This calculator uses the older ATP III Framingham point system, which estimates coronary heart disease risk only. Your clinician may use either tool depending on clinical context.
Q: Can I use this result to decide whether to start a statin? A: No. This tool provides an educational estimate only. Statin therapy decisions depend on a full clinical assessment including your complete medical history, current medications, preferences, and a conversation with your healthcare provider.
Q: How accurate is the Framingham Risk Score? A: The Framingham Risk Score performs well in populations similar to the original study cohort but may overestimate or underestimate risk in different ethnic groups or populations with very different baseline cardiovascular risk profiles. It remains a widely validated and clinically accepted tool for initial risk stratification.
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