Demographic features of patients and controls
| Control | FTD | SD | PNFA | AD | |
|---|---|---|---|---|---|
| No. | 27 | 12 | 13 | 9 | 19 |
| Sex (M:F) | 7:20 | 3:10 | 5:9 | 3:6 | 7:12 |
| Age (yr) | 61.1 (53–78) | 59.45 (42–72) | 63.77 (52–77) | 64.9 (57–78) | 61.8 (56–75) |
| MMSE | 28.7 (25–30) | 20.83 (10–30)* | 22.92 (5–29)* | 22.5 (15–28)† | 23.1 (7–29)* |
| Disease duration (yr) | – | 1.65 (0,25–3,4) | 3.90 (1,3–7,7)‡ | 3.56 (0,06–8,13) | 2.87 (0–4,97) |
Note:—FTD indicates frontotemporal dementia; SD, semantic dementia; PNFA, progressive nonfluent aphasia; AD, Alzheimer disease; MMSE, MIni-Mental State Examination.
*,†,‡ Kruskal-Wallis test.
* P < .01 compared with controls.
† P < .05 compared with controls.
‡ P < 01 compared with FTD.