Table 3 Overall performance of different methods used to estimate glomerular filtration rate in patients with different stages of CKD
Median difference of eGFR and sGFR2 | Median absolute difference of eGFR and sGFR2 | 15% (P15) | 30% (P30) | 50% (P50) | |
|---|---|---|---|---|---|
Total (n = 207) | |||||
eGFR4 and sGFR1 | -2.83 (-11.23 , 12.13) | 32.54 (15.74 , 58.97) | 49 (23.7%) | 92 (44.4%) | 140 (67.6%) |
eGFR6 and sGFR1 | -4.06 (-12.59 , 11.21)† | 32.78 (16.43 , 57.38) | 49 (23.7%) | 91 (44.0%) | 139 (67.1%) |
eGFRRBF and sGFR | 9.76 (-0.19 , 18.02)†‡ | 26.24 (13.29 , 55.82) | 62 (30.0%) | 112 (54.1%) | 149 (72.0%) |
Stage I/II (n = 64) | |||||
eGFR4 and sGFR1 | 9.23 (-9.20 , 37.35) | 26.41 (12.20 , 49.65) | 19 (29.7%) | 35 (54.7%) | 49 (76.6%) |
eGFR6 and sGFR1 | 4.13 (-14.66 , 32.62)† | 27.28 (12.73 , 44.42) | 16 (25.0%) | 33 (51.6%) | 49 (76.6%) |
eGFRRBF and sGFR | 12.03 (-4.98 , 27.83) | 19.73 (12.98 , 35.56)† | 21 (32.8%) | 43 (67.2%) | 56 (87.5%)† |
Stage III (n = 81) | |||||
eGFR4 and sGFR1 | -1.04 (-12.85 , 9.92) | 27.01 (13.76 , 58.47) | 22 (27.2%) | 43 (53.1%) | 59 (72.8%) |
eGFR6 and sGFR1 | -4.80 (-14.07 , 8.97)† | 29.82 (13.65 , 57.57) | 25 (30.9%) | 41 (50.6%) | 58 (71.6%) |
eGFRRBF and sGFR | 7.96 (-1.22 , 21.47)†‡ | 25.40 (11.23 , 48.50) | 26 (32.1%) | 47 (58.0%) | 61 (75.3%) |
Stage IV/V (n = 62) | |||||
eGFR4 and sGFR1 | -6.48 (-11.06 , -0.21) | 46.90 (30.81 , 64.90) | 8 (12.9%) | 14 (22.6%) | 32 (51.6%) |
eGFR6 and sGFR1 | -6.99 (-11.23 , -1.63) | 46.49 (26.56 , 65.17) | 8 (12.9%) | 17 (27.4%) | 32 (51.6%) |
eGFRRBF and sGFR | 8.89 (1.95 , 15.48)†‡ | 49.20 (14.98 , 89.37) | 15 (24.2%) | 22 (35.5%) | 32 (51.6%) |