Table 2 Baseline eGFR and eGFR stages classification

CKD stages, n (%)^a

0.010

 Stage 1

159 (39.9)

17 (23.6)

142 (43.6)

 Stage 2

186 (46.7)

41 (56.9)

145 (44.5)

 Stage 3

51 (12.8)

14 (19.4)

37 (11.3)

 Stage 4

2 (0.5)

0 (0.0)

2 (0.6)

eGFR, mL/min/1.73m²

 2009 CKD-EPI_cr

80.64 ± 21.93

76.00 ± 22.14

81.67 ± 21.79

0.047

 2012 CKD-EPI_cys

81.94 ± 26.34

73.35 ± 26.74

83.75 ± 25.89

0.002

 2012 CKD-EPI_cr-cys

81.10 ± 22.82

74.21 ± 23.24

82.62 ± 22.47

0.005

 2021 CKD-EPI_cr

84.61 ± 22.06

80.19 ± 22.45

85.59 ± 21.89

0.060

 2021 CKD-EPI_cr-cys

84.15 ± 23.10

77.12 ± 23.69

85.71 ± 22.71

0.004

 MDRD

78.57 ± 22.16

74.72 ± 22.06

79.42 ± 22.13

0.103

 Cockcroft-Gault

78.96 ± 36.34

75.31 ± 38.18

79.77 ± 35.95

0.347