Table 1.

Subject demographic

Group	Mean ± SEM age (years)	Sex	Mean ± SEM PMI (h)	Median Braak Score
NC	86.3 ± 1.4	N=15; 4M, 11W	2.8 ± 0.2	I
PCAD	85.8 ± 1.7a	N=14; 3M, 11W	2.8 ± 0.2	Vc
MCI	91.0 ± 1.9a,b	N=7; 2M, 5W	2.6 ± 0.2	IVc
LAD	80.8 ± 1.4a	N=15; 7M, 8W	3.6 ± 0.4	VIc
DC	68.9 ± 4.8	N=12; 7M, 5W	3.5 ± 0.4	IIc

^ap < 0.05 compared to DC

^bp < 0.05 compared to LAD

^cp ≤ 0.05 compared to NC

NC = age –matched normal control; MCI = mild cognitive impairment; PCAD = preclinical Alzheimer’s disease; LAD = late-stage Alzheimer’s disease; DC = diseased control; PMI=postmortem interval;