Comparison of
based on GFR0,2 and proposed equation with four-point GFR2,2 in the validation datasets for MACS (n=177) and CKiD (n=274). Percentile (2.5th, 5th, 10th, 25th, 50th, 75th, 90th, 95th, and 97.5th) box plots showing a high agreement within each study validation dataset.