Table 1.

Demographics (mean ± sd)

Group	Amyloid-negative (n = 41)	Amyloid-positive (n = 16)	Mild cognitive impairment (n = 15)
Age (years)	66.7 ± 3.4	66.6 ± 4.4	65.9 ± 5.1
Gender (F/M)	19/22	6/10	6/9
SRT total score	49.7 ± 8.4	49.1 ± 10.8	39.7 ± 13.2*
Mattis Dementia Rating Scale	140.5 ± 2.2	138.8 ± 2.2*	–
Mini-Mental State Exam	–	–	27.6 ± 1.7

^*p < .05 vs amyloid-neg