Demographic and Clinical Data of Patients
| Characteristic | AD (n = 20) | bvFTD (n = 11) | SD (n = 4) | PNFA (n = 5) | P |
| Age | 72.2 (8.7) | 61.0 (9.6) | 65.7 (6.0) | 68.0 (7.9) | 0.010* |
| Sex (male) | 13 | 9 | 2 | 1 | 0.119 |
| Duration of symptom (y) | 4.92 (1.9) | 6.91 (4.5) | 5.50 (3.7) | 3.60 (1.5) | 0.29 |
| Mini-mental state examination | 22.03 (4.61) | 23.73 (7.0) | 18.75 (12.8) | 19.00 (5.92) | 0.062 |
↵* P value indicates the statistically significant difference between 4 groups using ANOVA.
Group comparisons by ANOVA, except for sex by Kruskal–Wallis test.
AD = Alzheimer disease; bvFTD = behavioral variant frontotemporal dementia; SD = semantic dementia; PNFA = progressive nonfluent aphasia.