Table 2.

Characteristics of participants included in the study. The sample was composed of 384 cognitively unimpaired individuals, and 738 cognitively impaired, among which 539 were diagnosed with mild cognitive impairment and 199 with probable Alzheimer’s disease

Characteristics	CU	CI
Number of subjects	384	738
Age (mean, SD) in years	74.40 (6.50)	73.61 (7.94)
Females (n, %)	205 (53%)‡	311 (42%)‡
MMSE score (mean, SD)	29.06 (1.23)†	26.36 (3.68)†
Plasma pTau181 (mean, SD)	15.48 (10.02)†	19.80 (10.75)†

^‡Statistical difference between groups (P < 0.05)

^†Statistical difference between groups (P < 0.001)