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Distribution of patients in various KDIGO risk categories by eGFR calculated using CKD-EPI 2009 versus 2021 equation. CKD-EPI, Chronic Kidney Disease Epidemiology Collaboration; eGFR, estimated glomerular filtration rate; KDIGO, Kidney Disease Improving Global Outcomes. (Green: low risk; Yellow: moderately increased risk; Orange: high risk; Red, very high risk).
