Table 2.
Study participation and causes of attrition over 3 years following dementia diagnosis
| Dementia type follow-up status | Baseline |
1 year |
2 years |
|---|---|---|---|
| N (%) | N (%) | N (%) | |
| Alzheimer's | |||
| Active∗ | 2090 (100) | 1578 (75.5) | 921 (44.1) |
| Lost/Inactive† | 336 (16.1) | 166 (24.0) | |
| Dead† | 176 (8.4) | 124 (14.4) | |
| Censoring† | 367 (17.5) | ||
| Vascular | |||
| Active∗ | 136 (100) | 84 (61.8) | 40 (29.4) |
| Lost/Inactive† | 14 (10.3) | 5 (14.0) | |
| Dead† | 38 (27.9) | 17 (40.4) | |
| Censoring† | 22 (16.2) | ||
| Lewy body | |||
| Active∗ | 144 (100) | 105 (72.9) | 56 (38.9) |
| Lost/Inactive† | 18 (12.5) | 14 (22.2) | |
| Dead† | 21 (14.8) | 13 (23.6) | |
| Censoring† | 22 (15.3) | ||
| Frontotemporal | |||
| Active∗ | 78 (100) | 62 (79.5) | 24 (30.8) |
| Lost/Inactive† | 11 (14.1) | 5 (20.5) | |
| Dead† | 5 (6.4) | 9 (17.9) | |
| Censoring† | 24 (30.8) |
∗
% reflects proportion of the visit 1 active sample for each type of dementia.
†
% reflects cumulative proportion of the visit 1 active sample for each type of dementia.