Table 1. Subject population demographics.

	NC (n = 41)	CNV (n = 16)	p-value
Age (years, mean±SD)	75.93±4.59	76.58±5.27	0.32
Gender (%M)	48.8	56.2	0.77
Education (years, mean±SD)	16.49±2.71	16.06±2.91	0.55
Family history of AD (%Yes)	44.8	57.1	0.53
APOE4 carrier(%Yes, # Homozygote)	26.8, 0	43.8, 1	0.34

Demographic information describing the population of individuals who remained stable over 4 years (NC) and those who converted to MCI within that same period (CNV). Mann-Whitney tests were used to compare continuous variables and Fisher’s Exact test were used to compare categorical variables.