Fig. 3

Calibration curves for the Korean model before (upper panels) and after intercept adjustment (lower panels), for the outcome of CKD (eGFR < 60 ml/min/1.73 m²) for the first and third column and ‘any nephropathy’ (eGFR < 60 ml/min/1.73 m² or proteinuria) for the second and left columns. For each figure panel the broken diagonal line at 45° represents the ideal calibration. Participants are grouped into percentiles across increasing estimated probability. The vertical lines at the bottom of the graph depict the frequency distribution of the calibrated probabilities. eGFR is from MDRD equation (1^st and 2^nd columns) and CKD-EPI equation (3^rd and 4^th columns)