Table 4.
Characteristics of validation dataset.
| Characteristics | Total sample |
|---|---|
| n | 1,070 |
| Age, years | 63.2 (10.7) |
| Female, n | 437 (41%) |
| Education, years | 10.5 (3.1) |
| Follow-up length, years | 5.2 (3.8) |
| Progression to dementia, n | 251 (24%) |
| •[-] AD-type dementia, n | 170 (16%) |
| •[-] Vascular dementia, n | 21 (2%) |
| •[-] Frontotemporal dementia, n | 5 (1%) |
| •[-] Lewy Body or Parkinson dementia, n | 5 (1%) |
| •[-] Other dementia or unknown etiology, n | 50 (5%) |
| Impairment in only one cognitive domain*, n | 328 (31%) |
| Impairment in multiple cognitive domains*, n | 219 (20%) |
| MMSE, score | 27.9 (2.2) |
| AVLT Immediate, words recalled | 37.9 (11.4) |
| AVLT Delayed, words recalled | 6.9 (3.8) |
| VFT, words named | 19.9 (6.3) |
| TMT-A, seconds | 50.0 (19.0) |
| TMT-B, seconds | 91.1 (44.8) |
Results are mean (SD) or frequency (%). *Based on z-score < -1.5 derived from published normative data. AD, Alzheimer's disease; AVLT, Auditory Verbal Learning Test; MMSE, Mini Mental State Examination; TMT, Trail Making Test; VFT, Verbal Fluency Test.