CSF Biomarkers and Florbetapir Standard Uptake Value Ratios of Study Subjects.

Figures denote mean values and standard deviations. * Statistical significances were tested by one-way analysis of variance among groups. †Bonferroni multiple comparison tests show significant differences between high-ratio vs. low-ratio or high-ratio vs. normal group. There are no significant differences between low-ratio and normal groups. Abbreviations: CSF (cerebrospinal fluid), Aβ (amyloid beta1–42), pTau (phosphorylated Tau181p), PET (positron emission tomography), SUVR (standard uptake value ratio).