Table 1.

Demographic characteristics of the healthy controls (HC) and the three PPA variants, the group mean and standard deviation values are shown.

	HC (N=17)	nfvPPA (N=18)	lvPPA (N=15)	svPPA (N=9)	f-value
Age	65 (8.18)	69 (5.37)	64 (8.12)	69 (5.25)	2.67~
Gender (N of female)	13	7	7	4	NA
Education (year)	16 (2.52)	16 (3.59)	16 (1.78)	16 (2.64)	0
Time since onset (year)	NA	3.58 (2.50)	3.97 (3.11)	4.78 (2.74)	0.55
Whole-brain gray matter volume (% out of the Intracranial volume)	76.78 (1.82)	73.72 (151)*****	74.24 (2.15)**	74.22 (2.56)**	0.34
FTDL-CDR (scale 0 – 15)	NA	5.71(4.27)	5.53(3.94)	6.25(4.08)	0.08
FTDL-CDR Language (scale 0 – 3)	NA	1.81(0.88)	1.33(0.86)	1.88(0.64)	1.69

Each PPA variant was compared to the HC goup with independent t-tests. The last column shows the results of one-way-ANOVA evalution of differences across the three variants.

^~:p<0.1;

^*:p<0.05;

^**:p<0.01;

^*****:p<1e–05.