Table 3.
Kappa results for CKD stage classification
| Category | Kappa | Concordance Index (95.0%) | |
|---|---|---|---|
| Stage 1 | 0.6890 | 0.5440 | 0.8339 |
| Stage 2 | 0.4795 | 0.2962 | 0.6626 |
| Stage 3 | 0.9706 | 0.9099 | 1.0312 |
| Stage 4 | 1.0000 | 1.0000 | 1.0000 |
| Global Kappa | 0.7285 | 0.5979 | 0.8589 |
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