Figure 1

Bland and Altman analysis between the MDRD study, the CKD-EPI, the CKD-EPI Cys and the CKD-EPI mix equations. The continuous line represents the mean difference between measured and estimated GFR, whereas the dashed lines represent the limits of agreement (mean difference ± 2 SD). All values are expressed in mL/min/1.73 m2.