Percentage of patients with each feature at initial presentation
| AD spectrum | FTD spectrum | Control group | |||||
|---|---|---|---|---|---|---|---|
| Observed at initial presentation (%) | amnestic AD (n=29) | PCA (n=12) | lvPPA (n=12) | bvFTD (n=20) | nfvPPA (n=7) | svPPA (n=6) | SCI (n=25) |
| Apraxia | |||||||
| Limb | 69.0 | 91.7 | 66.7 | 10 | 57.1 | 0 | 0 |
| AOS | 0 | 0 | 0 | 0 | 71.4 | 0 | 0 |
| Associated left parietal features* | 34.5 | 50 | 75 | 15 | 14.3 | 0 | 4 |
| Dysgraphia | 20.7 | 33.3 | 75 | 15 | 14.3 | 0 | 4 |
| Dyslexia | 6.9 | 8.3 | 33.3 | 0 | 0 | 0 | 4 |
| Dyscalculia | 13.8 | 41.7 | 16.7 | 0 | 0 | 0 | 0 |
*Percentage of patients with at least one feature.
AD, Alzheimer's disease; AOS, apraxia of speech; bvFTD, behavioural variant frontotemporal dementia; FTD, frontotemporal dementia; lvPPA, logopenic variant primary progressive aphasia; nfvPPA, non-fluent variant primary progressive aphasia; PCA, posterior cortical atrophy; SCI, subjective cognitive impairment; svPPA, semantic variant primary progressive aphasia.