Percentage showing altered behaviour | χ2 | P value | ||
bvFTD n=22 | FTD-ALS n=17 | |||
Disinhibition | ||||
Inappropriate behaviour | 59 | 29 | 3.4 | 0.07 |
Loss of manners/decorum | 91 | 59 | Fisher’s | 0.03* |
Impulsivity | 86 | 41 | 8.8 | 0.003** |
Apathy and inertia | ||||
Apathy | 96 | 100 | Fisher’s | 1.00 |
Inertia | 41 | 41 | 0.0 | 1.0 |
Loss of sympathy or empathy | ||||
Loss of sympathy | 91 | 53 | Fisher’s | 0.01* |
Reduced social interest | 77 | 65 | Fisher’s | 0.48 |
Perseverative, stereotyped, ritualistic behaviour | ||||
Simple repetitive | 91 | 47 | Fisher’s | 0.004** |
Complex repetitive | 68 | 29 | 5.8 | 0.02* |
Verbal stereotypies | 14 | 24 | Fisher’s | 0.68 |
Hyperorality and dietary change | ||||
Food fads/sweet food preference | 86 | 65 | Fisher’s | 0.14 |
Binge eating | 55 | 29 | 2.5 | 0.12 |
Oral exploration of inedible objects | 0 | 0 | – | – |
*p<0.05; **p<0.01.
ALS, amyotrophic lateral sclerosis; bvFTD, behavioural variant FTD; FTD, frontotemporal dementia.