Mean MMSE scores for well, preclinical, and demented subjects at Time 1
| Subgroup | Mean MMSE score | Different from well subjects (p) |
| Well | 27.7 | 3-150 |
| CI | 25.4 | 0.000 |
| Prevascular | 27.7 | 0.984 |
| CI+prevascular | 25.2 | 0.000 |
| Pre-EP | 27.5 | 0.767 |
| CI+pre-EP | 24.7 | 0.000 |
| Prevascular+pre-EP | 27.1 | 0.329 |
| CI+prevascular+pre-EP | 25.9 | 0.004 |
| Demented | 22.2 | 0.000 |
↵3-150 Reference group.
CI=Cognitive impairment; Pre-EP=preclincal extrapyramidal.