Kidney Failure Risk Equation — 4 Variable: Clinical Guide

Overview

Estimates 2- and 5-year treated kidney failure risk in CKD stages G3–G5.

Clinical Significance

Estimates treated kidney failure risk; calibration differs by region and population.

When to Use

• Use as decision support when all required inputs are reliable.

How It Is Calculated

• North American 4-variable KFRE equation using age, sex, eGFR and urine ACR.

Interpretation

• Estimates treated kidney failure risk; calibration differs by region and population.

Worked Example

Enter verified values in the displayed units; MedicalC applies the published equation or point system.

Limitations

• Prediction models may be miscalibrated outside their derivation population.
• Measurement and classification error can materially change the result.

Clinical Pearls

• Document source values and units with the result.
• Use trends and the full clinical picture.

Common Mistakes

• Wrong units.
• Using non-contemporaneous inputs.
• Treating the output as a diagnosis or mandatory treatment decision.

References

1. Tangri N et al. JAMA. 2011;305:1553-1559. — Primary or supporting reference for the implemented model.