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QR-PiB positive vs. statistical parametric mapping (SPM) positive, QR-PiB indeterminate/negative.
| QR-PiB+ (n = 11) | SPM+, QR-PiB I/− (n = 14) |
p-value | |
| Age in years at time of PET scan ± SD | 64.86 ± 12.7 | 68.18 ± 13.0 | 0.8458 |
| APOE ε4 status (−/+/unknown) | 6/4/1 | 2/11/1 | 0.0393 |
