Table 1a.

Demographic, clinical, and imaging data for all Mild Cognitive Impairment (MCI) individuals in this study. MMSE = Mini-mental status exam, CDR-SB = Clinical Dementia Rating-Sum of Boxes score, APC = Annualized Percent Change, SE = Standard error of the mean, CI = Confidence Interval

	Aβ -/P-tau - (n = 36)	Aβ -/P-tau + (n = 9)	Aβ +/P-tau - (n = 15)	Aβ +/P-tau + (n = 119)
Age, Mean (SE)	74.2 (1.4)	80.4 (1.9)	76.9 (1.5)	74.1 (0.6)
Female, %	24	29	31	38
Education Years, Mean (SE)	15.9 (0.5)	16.1 (1.1)	16.5 (0.7)	15.6 (0.3)
MMSE, Mean (SE)	27.3 (0.3)	25.8 (0.6)	27.0 (0.5)	26.8 (0.2)
CDR-SB, Mean (SE)	1.3 (0.1)	1.3 (0.2)	1.8 (0.3)	1.6 (0.1)
Years Between MRI Scans, Mean (SE)	2.0 (0.1)	1.8 (0.1)	2.1 (0.2)	2.1 (0.1)
Entorhinal Cortex APC, Mean (95% CI)	-1.4 (-1.0, -1.8)	-1.1 (0.1, -2.3)	-1.1 (-0.3, -1.9)	-2.6 (-2.4, -2.8)