Table 2.

Demographic characteristics of GRN-bvFTD, bvFTD and AD groups

	GRN-bvFTD (n=18)	bvFTD (n=18)	AD (n=18)	P-value
Age at onset (yr)	55.13±5.29	59.67±8.65	53.14±6.62	0.069
Age at baseline (yr)	57.25±7.09	62.56±8.26	56.29±6.41	0.288
Education (yr)	6.81±3.93	6.69±3.89	6.89±2.95	0.746
Sex (M/F, n)	7/11	8/10	7/11	0.765

Data are presented as the mean ± SD with the exception of sex. AD: Alzheimer's disease; bvFTD: behavioral variant frontotemporal dementia; F: female; GRN-bvFTD: progranulin associated bvFTD; M: male. Group comparisons were performed through one-way analysis of variance and Pearson's chi-square test.