Overall performance of agreement between eGFR and sGFR in the external validation data set.

<p>Abbreviations: eGFR, estimated glomerular filtration rate; sGFR, standard glomerular filtration; CG, Cockcroft-Gault; MDRD, Modification of Diet in Renal Disease; CKD-EPI, Chronic Kidney Disease Epidemiology Collaboration; GABP, BP network with genetic algorithm</p><p>a:The difference between eGFR and sGFR was regressed against the average of eGFR and sGFR. <i>X</i>-axis represented the average of eGFR and sGFR. <i>Y</i>-axis represented the difference between eGFR and sGFR. eGFR, estimated glomerular filtration rate; sGFR, standard glomerular filtration rate.</p>*<p>:<i>P</i><0.001 compared with GABP6 network-GFR.</p>†<p>:<i>P</i><0.01 compared with GABP6 network-GFR.</p>‡<p>:<i>P</i><0.05 compared with GABP6 network-GFR.