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GFR Decline Rate (%/year) Calculator
GFR Decline Rate (%/year): Explanation and Clinical Context The GFR Decline Rate quantifies the annualized percentage change in estimated glomerular filtration rate (eGFR) over time. It is calculated as: ((Follow-up eGFR – Baseline eGFR) / Baseline eGFR) / Time interval in years × 100. This metric is crucial for identifying patients at risk of progressive chronic kidney disease (CKD). A decline rate >5% per year is t