Table 2.

Overall performance of difference and accuracy between 24 h-CrCl and estimated GFR.

Equations	Mean of difference ± SD   (mL/min)	R 2	Accuracy within
			15%	30%	50%
Cockcroft-Gault	2.3 ± 20.2	0.49	46	69	88
MDRD	−18.8 ± 26.9	0.28	25	44	72
CKD-EPI	−9.1 ± 22.9	0.30	33	56	75