Calculator inputs
3 columns large, 2 small, 1 mobileExample data table
| Profile | Age | Total Cholesterol | HDL | SBP | Treated BP | Smoker | Diabetes | Estimated 10 Year Risk |
|---|---|---|---|---|---|---|---|---|
| Female | 45 | 180 mg/dL | 60 mg/dL | 118 | No | No | No | 2.3% |
| Male | 52 | 195 mg/dL | 47 mg/dL | 132 | No | No | No | 10.0% |
| Male | 60 | 220 mg/dL | 40 mg/dL | 145 | Yes | No | Yes | 47.2% |
Formula used
This calculator uses a lipid based 10 year general cardiovascular disease equation. The form uses sex specific coefficients for age, total cholesterol, HDL cholesterol, systolic blood pressure, treatment status, smoking, and diabetes.
Male constants: S0 = 0.88936, MeanCoefficient = 23.9802
Female constants: S0 = 0.95012, MeanCoefficient = 26.1931
| Variable | Male coefficient | Female coefficient |
|---|---|---|
| ln(Age) | 3.06117 | 2.32888 |
| ln(Total Cholesterol) | 1.12370 | 1.20904 |
| ln(HDL Cholesterol) | -0.93263 | -0.70833 |
| ln(SBP), untreated | 1.93303 | 2.76157 |
| ln(SBP), treated | 1.99881 | 2.82263 |
| Smoking | 0.65451 | 0.52873 |
| Diabetes | 0.57367 | 0.69154 |
How to use this calculator
- Select sex and enter age within the supported range.
- Choose the cholesterol unit that matches the lab report.
- Enter total cholesterol, HDL cholesterol, and systolic blood pressure.
- Mark whether blood pressure treatment is currently used.
- Mark current smoking and diabetes status.
- Press Calculate Risk to show the result above the form.
- Review the percentage, category, ideal profile comparison, and graph.
- Use CSV or PDF export if a summary file is needed.
Frequently asked questions
1. What does the percentage mean?
It estimates the chance of developing a first cardiovascular event within ten years, based on the entered factors. It supports prevention planning, not diagnosis.
2. Can I use mmol/L for cholesterol?
Yes. Select mmol/L in the unit field. The calculator converts cholesterol values internally before applying the risk equation.
3. Why is HDL included separately?
HDL cholesterol is treated as a protective factor in the equation. Lower HDL values usually increase estimated risk when other inputs stay the same.
4. Does this calculator diagnose heart disease?
No. It estimates risk from common clinical inputs. Diagnosis requires medical history, examination, testing, and professional interpretation.
5. Why does treatment status change the result?
The equation uses different systolic blood pressure coefficients for treated and untreated blood pressure, reflecting how treatment status was modeled in the original risk equation.
6. Who should avoid relying only on this tool?
People with established cardiovascular disease, unusual lipid disorders, pregnancy related concerns, or complex medical histories should use clinician guidance rather than relying only on this estimate.
7. What counts as a higher risk result?
This page labels results under 10% as low, 10% to 19.9% as intermediate, 20% to 29.9% as high, and 30% or more as very high.
8. What should I do after getting a result?
Review the estimate with a clinician, especially if the result is intermediate or higher. Lifestyle changes, repeat measurements, and broader clinical context all matter.