Table 3.
Conversion Type by Modal Class Assignment
| Class 1 | Class 2 | Class 3 | Class 4 | |
|---|---|---|---|---|
| Irritable (N=289)1 | Complex (N=75) | Depressed (N=394) | Asymptomatic (N=3759) | |
| Any Conversion | 82 (28%)2 | 30 (40%) | 107 (27%) | 654 (17%) |
| Any MCI | 62 (21%) | 26 (35%) | 97 (25%) | 569 (15%) |
| Amnestic Single | 30 (48%)3 | 8 (31%) | 33 (34%) | 251 (44%) |
| Amnestic Multi | 16 (26%) | 14 (54%) | 36 (37%) | 185 (33%) |
| Non-Amnestic Single | 14 (23%) | 3 (12%) | 19 (20%) | 102 (18%) |
| Non-Amnestic Multi | 2 (3%) | 1 (4%) | 9 (9%) | 31 (5%) |
| Any Dementia4 | 29 (10%) | 9 (12%) | 29 (7%) | 171 (5%) |
| AD | 20 (69%)5 | 7 (78%) | 21 (72%) | 129 (75%) |
| VaD | 2 (7%) | 1 (11%) | 2 (7%) | 7 (4%) |
| Mixed AD/VaD | 1 (3%) | 0 (0%) | 3 (10%) | 15 (9%) |
| FTD | 0 (0%) | 0 (0%) | 0 (0%) | 1 (1%) |
| DLB | 0 (0%) | 1 (11%) | 1 (3%) | 2 (1%) |
| Other/Unknown | 6 (21%) | 0 (0%) | 2 (7%) | 17 (10%) |
1
All counts based on modal (most likely) class assignment, not true class assignment, which is unknown.
2
For the any conversion, any MCI, and any dementia rows, the denominator for calculating percentages is the total count of individuals in that class.
3
For MCI subtypes, the denominator for calculating percentages is the total count of individuals in that class with MCI.
4
Individuals may be counted in this table twice if they converted first to MCI, and then to dementia.
5
For dementia subtypes, the denominator for calculating percentages is the total count of individuals in that class with dementia.