Demographic information
| bvFTD (n=185) | ALS-FTD (n=56) | χ2 | t(df) | p Value | |
| Female to male Ratio | 95:90 1.1: 1 | 23: 33 1: 1.4 | 1.82 | – | 0.222 |
| Age at illness onset (mean (SD)) | 58 (7.81) | 63 (7.89) | – | −3.53(237) | <0.001*** |
| Illness duration at presentation (behavioural symptoms) (M (SD)) | 3 (2.32) | 2 (1.23) | – | 2.92(235) | 0.004** |
**p<0.01; ***p<0.001.
ALS-FTD, behavioural variant frontotemporal dementia with amyotrophic lateral sclerosis; bvFTD, behavioural variant frontotemporal dementia.