Table 5. Evaluation of eGFR with different equations (top panel) and concordance of attribution to each class of eGFR with Cohen’s weighted K test (bottom panel).

	CKD-EPI (ml/min/1.73 m2)	MDRD (ml/min/1.73 m2)	Cockcroft-Gault (ml/min)	Cockcroft-Gault adjusted (ml/min/1.73 m2)
	2398 patients	2398 patients	2398 patients	2398 patients
Number of patients (%) with eGFR ≥80	842 (35.1%)	902 (37.6%)	1076 (44.9%)	770 (32.1%)
Number of patients (%) with eGFR 50–79	1133 (47.2%)	1143 (47.7%)	879 (36.7%)	1117 (46.6%)
Number of patients (%) with eGFR 30–49	334 (13.9%)	285 (11.9%)	354 (14.8%)	411 (17.1%)
Number of patients (%) with eGFR <30	89 (3.7%)	68 (2.8%)	89 (3.7%)	100 (4.2%)
Mean ± SD of eGFR	69.93 ± 21.19	73.77 ± 23.87	79.74 ± 33.77	70.41 ± 25.71
Weighted K coefficients (and 95% CI) and classes of renal function based on eGFR estimates
	MDRD	Cockcroft-Gault	Cockcroft-Gault adjusted
CKD-EPI	0.8918 (0.8776–0.9061)	0.6242 (0.6000–0.6483)	0.7254 (0.7039–0.7469)
MDRD		0.5755 (0.5499–0.6012)	0.6404 (0.6164–0.6643)
Cockcroft-Gault			0.7654 (0.7460–0.7848)