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Intraobserver reproducibility of the classification using the Cohen kappa.
| Intraobserver reproducibility | The entire cohort | The young group | The elderly group |
|---|---|---|---|
| Observer 1 | 0.52 (moderate) | 0.62 (substantial) | 0.45 (moderate) |
| Observer 2 | 0.61 (substantial) | 0.68 (substantial) | 0.57 (moderate) |
| Observer 3 | 0.29 (fair) | 0.30 (fair) | 0.28 (fair) |
