Table 2.
Concordance of different tau modalities in the different diagnostic categories
| Cohen’s kappa | p value | |
|---|---|---|
| CU | ||
| Tau status based on SUVR vs. visual | 0.235 | 0.008 |
| Tau status based on SUVR vs. STOC | 0.606 | <0.001 |
| Tau status based on visual vs. STOC | 0.345 | 0.008 |
| Tau stages based on visual vs. STOC | 0.31* | <0.05 |
| MCI | ||
| Tau status based on SUVR vs. visual | 0.672 | <0.001 |
| Tau status based on SUVR vs. STOC | 0.745 | <0.001 |
| Tau status based on visual vs. STOC | 0.636 | <0.001 |
| Tau stages based on visual vs. STOC | 0.72* | <0.001 |
| DEM | ||
| Tau status based on SUVR vs. visual | 0.645 | <0.001 |
| Tau status based on SUVR vs. STOC | 0.651 | <0.001 |
| Tau status based on visual vs. STOC | 0.569 | <0.001 |
| Tau stages based on visual vs. STOC | 0.64* | <0.001 |
Abbreviations: CU cognitively unimpaired, MCI mild cognitive impairment, DEM dementia, STOC Simplified Temporo-Occipital Classification
*For concordance between stages (visual and STOC), the weighted Cohen’s kappa is reported