Table 2.
Performance of GFR estimating equations
| GFR Equations | Absolute Bias (95% CI), ml/min per 1.73 m2 | Percentage Bias (95% CI) | Accuracy 10%, (N) | Accuracy 30% (N) | Precision, ml/min per 1.73 m2 |
|---|---|---|---|---|---|
| eGFR MDRD | −1.9 (−2.6 to −1.2) | −2.2% (−4.0 to −0.3) | 30.8%a (351) | 80.4% (916) | 14.6 |
| eGFR Cr | 0.8 (0.03 to 1.5) | 3.1% (1.3 to 5.0) | 35.2% (401) | 80.4% (916) | 13.7 |
| eGFR CysC | −8.7 (−9.2 to −8.1) | −13.7% (−15.1 to −12.4) | 27.8%a (317) | 77.1%a (878) | 11.7 |
| eGFR Cr-CysC | −5.0 (−5.6 to −4.5) | −8.1% (−9.4 to −6.8) | 33.2% (378) | 86.5%a (985) | 10.7 |
95% CI, 95% confidence interval; MDRD, Modification of Diet in Renal Disease; Cr, creatinine; CysC, cystatin C; Cr-CysC, creatinine-cystatin C.
a
P<0.05 compared with eGFR Cr with the McNemar test.