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. Author manuscript; available in PMC: 2011 Nov 15.
Published in final edited form as: Biol Psychiatry. 2010 Nov 15;68(10):903–912. doi: 10.1016/j.biopsych.2010.08.025

Table 1.

Demographic, Clinical, and Genotypic Characteristics of Validation Cohort

Characteristic CDR 0 CDR 0.5 CDR 1
n 198 65 29
Gender (% Female) 63% 54% 52%
APOE genotype, % ε4+ 35% 51% 59%
Mean MMSE score (SD) 28.9 (1.3) 26.3 (2.8) 22.3 (3.9)
Mean age at LP (SD), yrs 71.0 (7.3) 73.8 (6.8) 76.5 (6.2)
Mean CSF Aβ42 (SD), pg/mL 605 (240) 446 (230) 351 (118)
Mean CSF tau (SD), pg/mL 304 (161) 539 (276) 552 (263)
Mean CSF ptau181 (SD), pg/mL 55 (25) 85 (44) 77 (38)

Abbreviations: CDR, Clinical Dementia Rating; APOE, apolipoprotein E; MMSE, Mini-Mental State Examination; LP, lumbar puncture; SD, standard deviation; CSF, cerebrospinal fluid; Aβ-42, amyloid-beta peptide 1–42; ptau181, tau phosphorylated at threonine 181.