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* | ||