47 ATN classification in subjective cognitive decline SUPPLEMENTARY MATERIAL Table e-1. Baseline demographics, PET, CSF, and MRI values in three-category ATN classification in SCD Normal AD biomarkers N=385 (55.6%) Non-AD pathologic change N=186 (26.8%) Alzheimer’s continuum N=122 (17.6%) P-value Demographics Age, mean (SD) 57.2 (8.3) 60.6 (8.7) 65.4 (7.6) 0.00* Sex, n female (%) 155 (40.3%) 70 (37.6%) 58 (47.5%) 0.21 Education, mean (SD) 5.4 (1.3) 5.5 (1.2) 5.5 (1.3) 0.57 MMSE, mean (SD) 28 (2) 28 (2) 28 (1) 0.91 APOE ε4 carriers, n (%) 103 (27.2%) 67 (36.0%) 75 (61.5%) 0.00* Amyloid PET Amyloid PET, n positive/ total (N=105) 0/54 0/27 24/24 0.00* CSF CSF Abeta, mean (SD) (N=688) 1125.2 (154.9) 1191.1 (208.7) 671.5 (107.5) 0.00* P-tau, mean (SD) 38.1 (8.6) 60.4 (19.2) 65.5 (37.0) 0.00* Total Tau, mean (SD) 215.8 (74.0) 367.4 (166.9) 442.9 (314.6) 0.00* 2
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