TABLE 1.

Demographics (full sample and subsamples).

Full sample	CN (N = 147)	AD (N = 141)	bvFTD (N = 44)
				${\chi }^2$ test
Sex (M/F)	53/94	66/75	35/9	AD vs. CN	bvFTD vs. CN
				${\chi }^2$ = 7.07, P = 0.008	${\chi }^2$ = 17.01, P < 0.0001
				Student t test
Age (years)	67 ± 8.3	74 ± 6.2	69.5 ± 8.0	AD vs. CN	bvFTD vs. CN
				t = 7.56, P < 0.0001	t = 1.87, P = 0.0630
				Student t test
Education (years)	13.2 ± 4.5	10.2 ± 4.9	13.1 ± 5.3	AD vs. CN	bvFTD vs. CN
				t = −5.66, P < 0.001	t = −0.73, P = 0.4688

Sample 1	CN (N = 45)	AD (N = 31)	bvFTD (N = 18)
				${\chi }^2$ test
Sex (M/F)	17/29	14/17	13/5	AD vs. CN	bvFTD vs. CN
				${\chi }^2$ = 0, P = 1	${\chi }^2$ = 10.74, P = 0.001
				Student t test
Age (years)	71 ± 7.2	76 ± 7.5	68 ± 9.9	AD vs. CN	bvFTD vs. CN
				t = 2.70, P = 0.008	t = −1.25, P = 0.22
				Student t test
Education (years)	14.7 ± 4	9.9 ± 4.9	15.4 ± 4.8	AD vs. CN	bvFTD vs. CN
				t = −4.63, P < 0.001	t = 0.57, P = 0.57

Sample 2	CN (N = 101)	AD (N = 110)	bvFTD (N = 26)
				${\chi }^2$ test
Sex (M/F)	36/65	53/58	26/10	AD vs. CN	bvFTD vs. CN
				${\chi }^2$ = 7.09, P = 0.008	${\chi }^2$ = 7.09, P < 0.0048
				Student t test
Age (years)	65.6 ± 8.2	73.3 ± 5.7	70.4 ± 6.3	AD vs. CN	bvFTD vs. CN
				t = 8.09, P < 0.0001	t = 2.98, P = 0.0034
				Student t test
Education (years)	12.6 ± 4.5	10.3 ± 4.9	11.7 ± 5.0	AD vs. CN	bvFTD vs. CN
				t = −3.74, P = 0.0002	t = −1.34, P = 0.1826

Notes: Values constituted by proportion (sex) and mean ± standard deviation (age and education). Categorical variables were analyzed with Pearson chi‐squared (${\chi }^2$) test. Continuous variables were analyzed through Student t tests.

Abbreviations: AD, Alzheimer's disease; bvFTD, behavioral variant of frontotemporal dementia; CN, healthy controls.