Demographic and clinical data of study groups.

C = Healthy controls, FTD = Frontotemporal dementia, AD = Alzheimer’s disease, SMCI = Stable mild cognitive impairment and PMCI = Progressive mild cognitive impairment, MMSE = Mini Mental State Examination.Results are expressed as mean ± standard deviation, range in parentheses.A33 subjects in Education in years,B34 subjects in MMSE,C45 subjects in MMSE,D15 subjects in MMSE,EPearson Chi-Square test,FOne-way Anova,GKruskal-Wallis test,HOne-way Anova. The statistical significance of differences at the.05 level.I, JResults of One-way Anova of the study groups. Results are expressed as mean ± standard deviation, with 95% confidence interval in parentheses.