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Kaplan–Meier curve for ESRD-free survival for renal parenchymal area (RPA) greater than or equal to 12.4 cm2 and below 12.4 cm2. ESRD-free survival was longer in boys with RPA≥12.4 cm2 (solid line) compared with boys with RPA<12.4 cm2 (dashed line; P<0.001).
