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(A) Receiver operating characteristic curve (ROC) curves for the non–Alzheimer’s Disease Neuroimaging Initiative (ADNI) autopsy-based Alzheimer’s disease (AD) cases versus non-ADNI cognitively normal (NC) subjects. The LRTAA model, amyloid-β 1 to 42 peptide (Aβ1-42), and tau/Aβ1-42 ratio are the independent variables whose ROC curves are shown. (B) ROC curves for ADNI probable AD versus NC subjects. CSF = cerebrospinal fluid.
