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Online Medical Tools — PREVENT Risk Calculator

Printed on 8/6/2026

For informational purposes only. This is not medical advice.

Cardiology

PREVENT Risk Calculator

The PREVENT (Predicting Risk of cardiovascular disease EVENTs) Risk Calculator implements the American Heart Association's 2024 risk equations, the contemporary successor to the 2013 Pooled Cohort Equations (PCE). PREVENT estimates 10-year risk of total cardiovascular disease (atherosclerotic CVD plus heart failure), ASCVD alone, and heart failure alone. Unlike the PCE, it is validated from age 30 (not 40), uses sex-specific equations instead of race-based coefficients, and incorporates kidney function (eGFR) and body mass index — recognizing the cardiovascular-kidney-metabolic (CKM) syndrome. Enter age, sex, total and HDL cholesterol, systolic blood pressure, eGFR, BMI, and treatment/diabetes/smoking status to get all three risk estimates. Compare with the older ASCVD Risk Calculator and Framingham Risk Score.

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Formula: AHA PREVENT base-model equations (Khan et al., Circulation 2024) — sex-specific logistic models on centered, spline-transformed predictors (age, non-HDL-C, HDL-C, SBP, diabetes, smoking, BMI, eGFR, antihypertensive and statin use) for 10-year total CVD, ASCVD, and heart failure.

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How It Works

1

Enter risk factors including eGFR and BMI

Provide age (30–79), sex, total and HDL cholesterol, systolic blood pressure, eGFR, BMI, and whether the patient is on blood-pressure or statin therapy, has diabetes, or smokes. eGFR and BMI are new to PREVENT and reflect the cardiovascular-kidney-metabolic link.

2

Apply the sex-specific PREVENT equations

The calculator uses the published 2024 base-model coefficients (sex-specific, no race term) to compute 10-year probabilities for three outcomes: total CVD, ASCVD, and heart failure.

3

Interpret the three risk estimates

ASCVD risk maps to familiar statin-decision thresholds (<5%, 5–7.5%, 7.5–20%, ≥20%). Total CVD adds heart failure, and the separate heart-failure estimate flags patients who may benefit from earlier metabolic and blood-pressure intervention.

Who Uses the PREVENT Risk Calculator

Primary Prevention Risk Assessment

Primary care physicians, cardiologists

Estimate 10-year cardiovascular risk to guide statin and blood-pressure treatment discussions using the AHA's current recommended model.

Younger-Adult Risk Estimation

Family medicine, internal medicine

PREVENT is validated from age 30, allowing earlier risk conversations than the Pooled Cohort Equations (which start at 40).

Heart Failure Risk Screening

Cardiologists, primary care

PREVENT is the first major risk model to output a dedicated 10-year heart-failure estimate, useful for patients with obesity, diabetes, or kidney disease.

CKM Syndrome Evaluation

Nephrologists, endocrinologists, cardiologists

By including eGFR and BMI, PREVENT operationalizes the cardiovascular-kidney-metabolic (CKM) syndrome framework in routine risk assessment.

Pro Tips

1

PREVENT generally estimates lower risk than the PCE

Across most populations PREVENT yields lower 10-year ASCVD estimates than the 2013 Pooled Cohort Equations, which tended to overestimate. Do not directly substitute old thresholds without considering this shift; current statin thresholds were derived using the PCE.

2

Use for primary prevention only

Like the PCE, PREVENT estimates risk of a first event. Patients with established ASCVD already qualify for secondary-prevention statin therapy regardless of the score.

3

eGFR is required — calculate it first if unknown

PREVENT explicitly models kidney function. If you do not have a recent eGFR, estimate it with the [eGFR Calculator](/tools/egfr-calculator) before running PREVENT.

4

BMI mainly drives the heart-failure estimate

In the base model, BMI coefficients are zero for ASCVD and total CVD's atherosclerotic component but contribute to heart-failure risk. Accurate height and weight matter most for the HF output — check [BMI](/tools/bmi-calculator).

5

No race coefficient by design

PREVENT removed race as an input, using sex-specific equations instead. This was a deliberate move away from race-based medicine; clinical context and social determinants should still inform decisions.

Common Questions About Your Results

Evidence-Based Methodology

This calculator implements the base-model coefficients of the American Heart Association's PREVENT equations (Khan SS et al., 'Development and Validation of the American Heart Association's Predicting Risk of cardiovascular disease EVENTs (PREVENT) Equations,' Circulation. 2024;149:430–449). The implementation was validated against the open-source preventr reference package and reproduces its published example outputs exactly.

Clinical Content Trust

Last reviewed:
June 23, 2026
Guideline version:
General evidence framework v2026.04
Source set version:
Primary-source set v1

How to Interpret Your Result

PREVENT reports three 10-year risk percentages. The ASCVD estimate (heart attack and stroke) is most comparable to existing guideline thresholds: low (<5%), borderline (5–7.5%), intermediate (7.5–20%), and high (≥20%). Total CVD adds heart failure to ASCVD and is therefore higher than ASCVD alone. The heart-failure estimate stands on its own and is most influenced by blood pressure, BMI, diabetes, and kidney function.

Because PREVENT was recalibrated on contemporary cohorts, its ASCVD estimates are typically lower than those from the 2013 Pooled Cohort Equations for the same patient. A given percentage represents the expected proportion of people with that risk profile who would experience the event over 10 years — it is a population estimate, not an individual certainty, and is modifiable through treatment and lifestyle change.

When to Use This Tool

Use PREVENT for primary-prevention cardiovascular risk assessment in adults aged 30–79 without established cardiovascular disease. It is especially useful for younger adults (30–39) outside the Pooled Cohort Equations' range, and for patients with obesity, diabetes, or chronic kidney disease where the heart-failure estimate and eGFR/BMI inputs add value. It supports the clinician–patient discussion about statins, blood-pressure treatment, and metabolic risk reduction.

Limitations

PREVENT estimates risk of a first cardiovascular event and should not be applied to patients with established ASCVD, who are already secondary-prevention candidates. Statin thresholds in current guidelines were derived using the Pooled Cohort Equations, so directly applying those cutoffs to PREVENT's generally lower estimates may under-treat some patients until guidelines are updated.

This tool implements the base model only; the full PREVENT equations can additionally incorporate urine albumin-to-creatinine ratio (UACR), HbA1c, and a social deprivation index for refined estimates. As with any model, PREVENT does not capture every risk-enhancing factor (family history, Lp(a), inflammatory disease), and clinical judgment and shared decision-making remain essential.

Disclaimer: This tool is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about your health.

Sources

  1. Khan SS et al. Development and Validation of the AHA PREVENT Equations. Circulation. 2024;149:430–449.
  2. AHA Cardiovascular-Kidney-Metabolic (CKM) Health Presidential Advisory. Circulation. 2023.
  3. preventr — open-source reference implementation of the PREVENT equations

Changelog

  1. June 23, 2026 · trust-baseline

    Clinical trust metadata enabled for this tool page with structured review/version fields.

Frequently Asked Questions