Memory
Memory | Median score | Range | p Value | ||
---|---|---|---|---|---|
FTD | AD | FTD | AD | ||
Bold type indicates that the item significantly changed the odds of one or other diagnosis: *FTD performance worse than AD; †AD performance worse than FTD. | |||||
Analyses were based on a minimum of 73 Alzheimer’s disease patients and 33 FTD patients. | |||||
‡Delayed recall is expressed as a percentage of immediate recall; figures are greater than 100% where the amount of information produced on delayed recall exceeds that produced on immediate recall. | |||||
AD, Alzheimer’s disease; FTD, frontotemporal dementia. | |||||
No of correct answers | |||||
Digit span forwards | 6 | 6 | 0 to 6 | 2 to 9 | 0.954 |
Digit span backwards | 3 | 3 | 0 to 10 | 0 to 7 | 0.601 |
Story: free recall | 5 | 2 | 0 to 10 | 0 to 10 | 0.007† |
Story: cued recall | 7 | 3 | 0 to 10 | 0 to 10 | 0.001† |
Story: delayed free recall | 0.000† | ||||
Story: delayed cued recall | 0.000† | ||||
Story: % retained with delay (free) | 100 | 0 | 0 to 175%‡ | 0 to 400%‡ | 0.000† |
Story: % retained with delay (cued) | 97 | 50 | 0 to 160%‡ | 0 to 400%‡ | 0.001† |
Celebrity recall (/9) | 4 | 1 | 0 to 8 | 0 to 9 | 0.000† |
Error types | Per cent of subjects | ||||
Intrusions in story recall | 6 | 31 | 0.012† | ||
Confabulations in story recall | 24 | 8 | 0.038* | ||
Misconstruction in story recall | 50 | 9 | 0.000* |