Table 2.

Demographic information of the BAC NC subsamples

	BAC NC PIB−	BAC NC PIB+
Demographics
Number of subjects	47	25
Age at MRI (years)	74.9 (5.5)	75.0 (6.1)
Number of women	31 (66%)	17 (68%)
Education (years)	17.3 (1.7)	16.4 (2.1)*
Measurements
Δ time (MRI–FDG) (years)	0.1 (0.4)	0.2 (0.5)
Δ time (NTS–MRI) (years)	0.3 (0.2)	0.3 (0.2)
Biomarkers
APOE ε4 carrier	11 (23%)	11 (44%)
Clinical cognitive status
MMSE	29.0 (1.3)	28.5 (1.5)

Values are given as the mean (SD). Δ, Absolute difference; MMSE, mini mental status examination.

*p <0.1.