Table 1.

Demographic and cognitive data

	High PiB group	Low PiB group	P value
Baseline (n)	27	16
Female, %	32.1 %	50%	0.29
Age (years)	73 ± 6.0	66 ± 8.6	0.0025
Education	12.5 ± 2.9	12.2 ± 3.4	0.74
Follow-up (months)a	24.3 ± 1.2	24.9 ± 2.6	0.32
ApoE4	64.3% (n = 26)	18.8% (n = 15)	0.009
MoCA
Baseline	23.4 ± 3.3	25.7 ± 2.8 (n = 15)	0.025
Follow-up	21.4 ± 4.9	25.2 ± 3.4	0.005

^aBetween PiB scan dates. Data presented as mean ± sd. n number, MoCA montreal cognitive assessment