Language
| Language | 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 patients and 33 FTD patients. | ||||||
| AD, Alzheimer’s disease; BNT, Boston naming test; FTD, frontotemporal dementia. | ||||||
| No of correct answers | ||||||
| Graded naming test (/30) | 15 | 14 | 0 to 25 | 0 to 27 | 0.805 | |
| Naming line drawings (BNT) (/10) | 10 | 10 | 1 to 10 | 4 to 10 | 0.819 | |
| Naming famous faces (/9) | 6 | 4 | 0 to 9 | 1 to 9 | 0.100 | |
| Repetition (/6) | 5 | 4 | 0 to 6 | 0 to 6 | 0.256 | |
| Sentence comprehension (/11) | 9 | 10 | 0 to 11 | 5 to 11 | 0.001* | |
| Metaphor comprehension (/4) | 1 | 3 | 0 to 4 | 0 to 4 | 0.000* | |
| Error types | ||||||
| Graded naming test errors | ||||||
| Superordinate category | 1 | 1 | 0 to 7 | 0 to 15 | 0.736 | |
| Coordinate category | 3 | 2 | 0 to 11 | 0 to 7 | 0.080 | |
| Phonological | 0 | 0 | 0 to 3 | 0 to 6 | 0.019† | |
| Functional descriptions | 4 | 5 | 0 to 12 | 0 to 17 | 0.569 | |
| Omissions | 3 | 3 | 0 to 28 | 0 to 18 | 0.285 | |
| Perceptual | 1 | 1 | 0 to 4 | 0 to 15 | 0.052 | |
| Perseverative | 0 | 0 | 0 to 18 | 0 | 0.006* | |
| Errors | ||||||
| Repetition errors | Per cent of subjects | |||||
| Omission errors in repetition | 31% | 43% | 0.273 | |||
| Word order errors in repetition | 11% | 12% | 0.893 | |||
| Phonological errors in repetition | 9% | 43% | 0.001† | |||
| Concrete errors in repetition | 17% | 4% | 0.034* | |||
| Comprehension errors | ||||||
| Concrete sentence interpretation | 11% | 0 | 0.000* | |||
| Concrete metaphor interpretation | 56% | 24% | 0.001* | |||