Applicability of 14 Formulas for Estimating Glomerular Filtration Rate in the Evaluation of Renal Function before and after Nephron-Sparing Surgery in Patients with Renal Tumors

Table 4

Spearman correlation analysis and Bland–Altman agreement analysis of 14 eGFR and rGFR after surgery.

Formula	eGFR	Spearman’s correlation		Arithmetic mean	Slope	Intercept	95% CI (n (%))
		R
rGFR	93.67 ± 22.08	—	—	—	—	—	—
eGFR1	87.92 ± 23.51	0.499	0.005	−5.7262	0.08306	−13.2684	29/30
eGFR2	89.97 ± 18.30	0.305	0.101	−3.7002	−0.2787	21.8890	29/30
eGFR3	84.65 ± 17.22	0.305	0.101	−9.0210	−0.3672	23.7211	29/30
eGFR4	110.93 ± 22.57	0.305	0.101	17.2630	0.03263	13.9253	28/30
eGFR5	94.77 ± 19.47	0.324	0.081	1.0985	−0.1824	18.2889	29/30
eGFR6	91.49 ± 17.38	0.421	0.021	−2.1787	−0.3217	27.6003	29/30
eGFR7	95.27 ± 23.23	0.444	0.014	1.6039	0.06294	−4.3426	29/30
eGFR8	94.02 ± 19.33	0.471	0.009	0.3488	−0.1644	15.7741	30/30
eGFR9	97.34 ± 14.49	0.284	0.128	3.6656	−0.5510	56.2854	29/30
eGFR10	88.86 ± 21.03	0.480	0.007	−4.8075	−0.06502	1.1269	28/30
eGFR11	95.11 ± 27.50	0.511	0.004	1.4373	0.2681	−23.8695	29/30
eGFR12	90.69 ± 21.65	0.537	0.002	−2.9858	−0.02436	−0.7408	29/30
eGFR13	100.77 ± 34.90	0.581	0.001	7.0974	0.5963	−50.8760	29/30
eGFR14	94.74 ± 24.52	0.582	0.001	1.0664	0.1288	−11.0627	29/30

, no significant correlation；95% CI, numbers within 95% CI.