TABLE 8.
Diagnostic rating agreement.
| Comparison | Kappa coefficient |
| SPM vs. CSF Aβ42 (P/N) | 0.13 |
| QR-PiB vs. CSF Aβ42 (P/N) | 0.06 |
| SPM vs. QR-PiB (P/I/N) | 0.33 |
P = positive, I = indeterminate, N = negative.
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