Participant demographics
| Control | bvFTD | FTD-ALS | ANOVA, t-test or χ2 | P value | |
| Number | 30 | 23 | 20 | ||
| Sex male:female | 9:21 | 14:9 | 12:8 | χ2=6.6 | 0.04 |
| Age at test mean (SD) | 59 (8) | 60 (7) | 65 (8) | F(2,72)=3.32 | 0.03 |
| Years of education mean (SD) | 14 (3) | 12 (3) | 13 (3) | F(2,72)=3.86 | 0.03 |
| Duration of symptoms Mean years (SD) | n/a | 5 (4) | 3 (1) | t=2.6 | 0.02 |
| Disease severity* mean (SD) | n/a | 9.3 (2.8) | 9.5 (2.8) | t=−0.26 | 0.80 |
*Modified Clinical Dementia Rating scale,17 mean sum of boxes.
ANOVA, analysis of variance; bvFTD, behavioural variant FTD; FTD, frontotemporal dementia.