TABLE 1.

NACC demographics.

	All	70 year old’s	TCP	Non-TCP	T-test/Fisher’s exact test	80 Year Old’s	TCP	Non-TCP	T-test/Fisher’s Exact Test
n	347	244	83	161		103	22	81
Age (SD)	75.94 (4.95)	74.25 (2.72)	74.07 (2.68)	74.34 (2.75)	0.476	83.31 (2.67)	82.82 (2.56)	83.44 (2.70)	0.331
Female (%)	211 (60.81%)	150 (61%)	59 (71%)	91 (56%)	0.037	61 (59.22%)	13 (59.09%)	48 (59.26%)	>0.999
Education (SD)	15.00 (3.38)	15.07 (3.35)	16.49 (2.37)	14.33 (3.54)	< 0.0001	14.82 (3.47)	16.55 (2.54)	14.35 (3.55)	0.008

NACC sample subject demographic information with T-test and Fisher’s Exact Test comparisons. p value < 0.05.