Estimating Renal Function in the Elderly Malaysian Patients Attending Medical Outpatient Clinic: A Comparison between Creatinine Based and Cystatin-C Based Equations

Figure 1

(a–d) Bland and Altman analysis of GFR estimates. In this analysis, the differences between estimated and measured GFR are plotted against the average of the estimated and measured GFR for each individual patient.

(a) Cockcroft-Gault BSA equation and measured GFR (ml/min/1.73 m²)

(b) 4-MDRD equation and measured GFR (ml/min/1.73 m²)

(c) CKD-EPIcr equation and measured GFR (ml/min/1.73 m²)

(d) CKD-EPIcys equation and measured GFR (ml/min/1.73 m²)