Table 1.

Group demographics and comparisons.

Group	Age (mean years)	Sex (% female)	Education (mean years)
DMAP
aMCI/AD (N = 38)	69.21 (6.91)	47.37	15.50 (2.72)
HC (N = 20)	72.70 (4.73)*	60.00	16.60 (2.87)
PREVENT-AD
High-Aβ (N = 33)	67.66 (5.17)	78.79*	14.64 (2.70)
Low-Aβ (N = 71)	67.28 (4.83)	67.61	15.25 (3.31)

DMAP: Dynamic Mapping of Alzheimer’s disease Pathology study; aMCI: amnestic mild cognitive impairment; AD: Alzheimer’s disease; HC: healthy control; PREVENT-AD: Pre-symptomatic Evaluation of Novel or Experimental Treatments for Alzheimer’s Disease study; Aβ: amyloid-β. Parentheticals for continuous variables indicate one standard deviation.

^*p < .05, compared to the aMCI/AD group.