What events does the PCE predict?

The Pooled Cohort Equations estimate the 10-year risk of a first ASCVD event, defined as nonfatal myocardial infarction, coronary heart disease death, or fatal or nonfatal stroke — the same endpoints used in the ATPIII and 2013 ACC/AHA guidelines.

How does the PCE differ from the Framingham Risk Score?

The PCE was derived from multiple diverse U.S. cohort studies (ARIC, CHS, CARDIA, Framingham Original and Offspring) and includes separate coefficient sets for African American adults, which the original Framingham Risk Score did not. It also includes stroke in the primary endpoint, whereas earlier scores focused on coronary events only.

What does the baseline survival S0 represent?

S0 is the estimated survival probability at 10 years for a hypothetical patient with all covariates equal to zero (on the log scale). Combined with the difference between the individual's summed coefficients and the cohort mean, it yields the Cox model's predicted survival — from which 1 minus survival gives the event risk.

Why are there separate equations for race and sex?

The derivation cohorts showed statistically significant heterogeneity in risk factor associations by race and sex. Using pooled-but-stratified equations improves calibration. The ACC/AHA notes the equations may be less well calibrated for Hispanic, Asian, and Native American populations.

What are the ACC/AHA risk categories?

Low: <5% — Borderline: 5 to <7.5% — Intermediate: 7.5 to <20% — High: ≥20%. These thresholds guide the 2018 cholesterol guideline recommendations on initiating or intensifying statin therapy.

Is this tool a substitute for clinical judgment?

No. This calculator is for educational and informational purposes only. Clinical decisions must incorporate individual risk-enhancing factors, patient preference, comorbidities, and clinician expertise. Always refer to current ACC/AHA guidelines and consult a qualified healthcare provider.

Pooled Cohort ASCVD Risk Calculator

Calculate 10-year ASCVD risk using the full 2013 ACC/AHA Pooled Cohort Equations with transparent coefficient-level detail.

Patient Parameters

Biological Sex

Race / Ethnicity

PCE validated for White and African American adults. Other groups: use with caution.

Age (40–79 years)

Total Cholesterol (mg/dL)

HDL Cholesterol (mg/dL)

Systolic Blood Pressure (mmHg)

On blood pressure treatment

Diabetes (type 1 or 2)

Current smoker

Complete all fields to see the 10-year ASCVD risk estimate

Medical disclaimer: This calculator is for educational purposes only and does not constitute medical advice. The 2013 ACC/AHA Pooled Cohort Equations are validated for adults aged 40–79 without pre-existing ASCVD. Calibration may be lower for non-White, non-African American populations. Always consult a qualified healthcare provider before making clinical decisions.

Summary

The Pooled Cohort Equations (PCE) are the foundation of the 2013 ACC/AHA cardiovascular risk guidelines. This calculator applies the published sex- and race-specific Cox regression coefficients to estimate the probability of a first atherosclerotic cardiovascular disease event — nonfatal MI, coronary heart disease death, or fatal/nonfatal stroke — within 10 years. Unlike simplified risk tools, it shows every term of the equation so clinicians and students can audit the computation.

How it works

Select the patient's biological sex and race/ethnicity (White or African American).
Enter age (40–79 years), total cholesterol, and HDL cholesterol in mg/dL.
Enter systolic blood pressure (mmHg) and indicate if the patient is on BP-lowering treatment.
Check diabetes and current smoker status as applicable.
Click Calculate — the tool applies the appropriate PCE coefficient set, shows each ln-transform, and displays the 10-year risk with category.

Use cases

Determine statin therapy eligibility per 2018 ACC/AHA cholesterol guidelines.
Audit or teach the mathematics behind the Pooled Cohort Equations.
Model the impact of BP treatment, smoking cessation, or cholesterol reduction on risk.
Support clinician–patient shared decision-making discussions.
Screen primary prevention candidates aged 40–79 without prior CVD.
Cross-check clinic or EHR-generated ASCVD scores.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu