Table 3

Frequency of behavioural changes specified in diagnostic criteria

Percentage showing altered behaviourχ2P value
bvFTD n=22FTD-ALS n=17
 Inappropriate behaviour59293.40.07
 Loss of manners/decorum9159Fisher’s0.03*
Apathy and inertia
Loss of sympathy or empathy
 Loss of sympathy9153Fisher’s0.01*
 Reduced social interest7765Fisher’s0.48
Perseverative, stereotyped, ritualistic behaviour
 Simple repetitive9147Fisher’s0.004**
 Complex repetitive68295.80.02*
 Verbal stereotypies1424Fisher’s0.68
Hyperorality and dietary change
 Food fads/sweet food preference8665Fisher’s0.14
 Binge eating55292.50.12
 Oral exploration of inedible objects00
  • *p<0.05; **p<0.01.

  • ALS, amyotrophic lateral sclerosis; bvFTD, behavioural variant FTD; FTD, frontotemporal dementia.