Table 3.
Concordance rate between eGFR and mGFR categories
| eGFR, mL/min/1.73 m2 | N participants | Overall group concocrdance rate (%) | Lin’s CCC for group agreement (95% CI) | ||||||
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| mGFR, mL/min/1.73 m2 | |||||||||
|
| |||||||||
| <15 | 15–29 | 30–44 | 45–59 | 60–89 | ≥90 | ||||
| 2009 CKD-EPI | < 15 | 70 | 13 | 1 | 0 | 0 | 0 | 63.4 | 0.895 (0.885–0.904) |
| 15–29 | 37 | 73 | 11 | 0 | 0 | 0 | |||
| 30–44 | 3 | 44 | 90 | 43 | 5 | 0 | |||
| 45–59 | 4 | 9 | 70 | 93 | 48 | 0 | |||
| 60–89 | 0 | 2 | 11 | 81 | 371 | 96 | |||
| ≥ 90 | 0 | 1 | 0 | 6 | 120 | 352 | |||
| 2021 CKD-EPI | < 15 | 62 | 11 | 1 | 0 | 0 | 0 | 60.5 | 0.884 (0.873–0.894) |
| 15–29 | 42 | 61 | 7 | 0 | 0 | 0 | |||
| 30–44 | 6 | 57 | 81 | 25 | 2 | 0 | |||
| 45–59 | 4 | 10 | 72 | 87 | 30 | 0 | |||
| 60–89 | 0 | 2 | 22 | 103 | 324 | 62 | |||
| ≥ 90 | 0 | 1 | 0 | 8 | 188 | 386 | |||
| EKFC | < 15 | 68 | 12 | 1 | 0 | 0 | 0 | 61.0 | 0.891 (0.881–0.901) |
| 15–29 | 41 | 78 | 12 | 1 | 0 | 0 | |||
| 30–44 | 3 | 41 | 99 | 50 | 5 | 0 | |||
| 45–59 | 2 | 9 | 61 | 103 | 73 | 0 | |||
| 60–89 | 0 | 1 | 10 | 66 | 382 | 169 | |||
| ≥ 90 | 0 | 1 | 0 | 3 | 84 | 279 | |||
Abbreviations: CI, confidence interval; CKD-EPI, Chronic Kidney Disease Epidemiology Collaboration; eGFR, estimated glomerular filtration rate; EKFC, European Kidney Function Consortium; Lin’s CCC, Lin’s concordance correlation coefficient; mGFR, measured glomerular filtration rate.