Diagnostic value of six estimating equations compared with rGFR.

Note: R = coefficient of relationship between eGFR and rGFR; ROCAUC = aera under receiver operating characteristic curve.Abbreviations: C-MDRD: the Chinese modified Modification of Diet in Renal Disease equation; CKD-EPI: Chronic Kidney Disease Epidemiology Collaboration; CKD-EPI2009Scr: serum creatinine–based CKD-EPI equation which was developed in 2009; CKD-EPI2012cys: cystatin C–based CKD-EPI equation which was newly developed in 2012; CKD-EPI2012Scr-cys: serum creatinine– and cystatin C–based CKD-EPI equation which was newly developed in 2012.Correlation coefficients of the C-MDRD equation, MacIsaac equation, Ma equation, CKD-EPI2012cys equation and CKD-EPI2012Scr-cys equation were compared against that of CKD-EPI2009Scr equation (p1).ROCAUC of the C-MDRD equation, MacIsaac equation, Ma equation, CKD-EPI2012cys equation and CKD-EPI2012Scr-cys equation were compared against that of CKD-EPI2009Scr equation (p2).