Comparative Performance of Creatinine-Based Estimated Glomerular Filtration Rate Equations in the Malays: A Pilot Study in Tertiary Hospital in Malaysia

Table 3

Correlation coefficient (), mean, bias, precision, and accuracy for CGBSA, 4-MDRD, and CKD-EPI formula.

	Correlation coefficient ()	Mean GFR	Range (IQR)		value	Mean difference (bias)	SD of mean bias (precision)	Accuracy within
			Lower	Upper				10%	30%
Measured GFR		42.039	17.70	111.10
CGBSA	0.877	40.467	16.52	115.52	0.303	−1.573	10.802	9.8	47.1
4-MDRD	0.848	35.902	14.00	98.00	0.001	−6.137	12.058	13.7	54.9
CKD-EPI	0.854	37.235	14.00	121.00	0.005	−4.804	11.697	13.7	49.0

Significantly correlating with .
(Bias: mean difference of estimated GFR and measured GFR; accuracy: percentage of GFR estimates within % of measured GFR; IQR: interquartile range).