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Table 9 Bias, precision, and accuracy of creatinine and cystatin C estimates for patients with estimated < 60 ml/min per 1.73 m2 (n = 20)

From: Comparative study of various glomerular filtration rate estimating equations in Egyptian patients with hepatitis C virus-related liver cirrhosis: a single-center observational study

  Bias Precision Accuracy % within
10% 30%
Estimates using serum creatinine
• Cockcroft-Gault − 20.5 13.6 5 23
• MDRD − 4.1 8.1 43 83
• CKD-EPI − 6.5 8.7 30 85
Estimates using both serum creatinine and cystatin C
• CKD-EPI creatinine cystatin C 4.1 5 73 95
Estimates using serum cystatin C
• CKD-EPI cystatin C 9.8 7.3 23 70