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Entire test cohort vs. statistical parametric mapping (SPM) positive, QR-PiB indeterminate/negative.
| Entire cohort (n = 115) | SPM+, QR-PiB I/− (n = 14) |
p-value | |
| Age in years at time of PET scan ± SD | 59.6 ± 11.5 | 68.18 ± 13.0 | 0.0104 |
| APOE ε4 status (−/+/unknown) | 51/56/8 | 2/11/1 | 0.0369 |
