Table 1.

Demographic, clinical, and imaging data for all healthy older controls (HC) in this study. MMSE = Mini-mental status exam, CDR-SB = CDR-Sum of Box Scores, ADAS-cog = Alzheimer's Disease Assessment Scale-cognitive subscale, APC = Annualized Percent Change, SE = Standard error of the mean

	Aβ -/P-tau - (n = 46)	Aβ -/P-tau + (n = 19)	Aβ +/P-tau - (n = 20)	Aβ +/P-tau + (n = 21)
Age, Mean (SE)	74.3 (0.6)	78.0 (1.4)	74.9 (1.1)	78.2 (1.0)
Female, %	24	29	31	38
Education Years, Mean (SE)	15.5 (0.4)	15.5 (0.4)	14.8 (0.8)	16.7 (0.6)
MMSE, Mean (SE)	29.1 (0.1)	28.8 (0.3)	29.1 (0.2)	29.3 (0.2)
Years Follow-up, Mean (SE)	3.3 (0.1)	3.3 (0.2)	3.0 (0.2)	2.9 (0.2)
ADAS- cog APC, Mean (SE)	-0.13 (0.7)	0.43 (0.6)	0.61 (0.7)	1.6 (0.9)
CDR-SB APC, Mean (SE)	0.03 (0.01)	0.006 (0.01)	-0.03 (0.1)	0.2 (0.1)