Table 3.
Cognitive diagnosis by NPSs and cognition diagnosis sequence
| Diagnosis | Never (%) | NPS before MCI (%) | NPS before dementia∗ | NPS after dementia (%) |
|---|---|---|---|---|
| Amnestic MCI | 222 (22) | 560 (54) | 250 (24) | - |
| Nonamnestic MCI | 67 (21) | 174 (56) | 72 (23) | - |
| AD | 46 (12) | 116 (30) | 163 (42) | 67 (17) |
| LBD | 2 (14) | 7 (50) | 4 (29) | 1 (7) |
| FTD | 0 | 2 (67) | 1 (33) | 0 |
| VaD | 0 | 2 (67) | 1 (33) | 0 |
| Mixed | 8 (4) | 71 (37) | 77 (41) | 34 (18) |
| Other | 11 (22) | 7 (14) | 23 (45) | 10 (20) |
Abbreviations: AD, Alzheimer's disease; FTD, frontotemporal dementia; LBD, Lewy body dementia; MCI, mild cognitive impairment; NPS, neuropsychiatric symptom; VaD, vascular dementia.
∗
Includes those who developed NPS after MCI (normal to MCI); NPS after MCI, before dementia (normal to MCI to dementia); and NPS before dementia (normal to dementia).