Table 1.
Baseline characteristics of the four groups of study participants.
| Baseline variables | Completed Follow-up (n=1727) | Prevalent Dementia & CIND/MCI* (n=154) | Died before Follow-up (n=159) | Lost to Follow-up (n=172) | p-value |
|---|---|---|---|---|---|
| Age (SD) | 73.5 (6.7) | 79.4 (7.4) | 74.8 (6.9) | 73.8 (7.1) | 0.0001a |
| Female, % | 66.7 | 61.0 | 59.1 | 57.0 | 0.0155c |
| Years of education (SD) | 9.8 (3.0) | 7.6 (3.6) | 9.2 (3.3) | 9.7 (3.0) | 0.0001a |
| Cognitive score (SD) | 31.0 (1.9) | 25.0 (4.8) | 30.1 (2.6) | 30.3 (2.7) | 0.0001a,b,c |
| Informant score (SD) | 2.3 (2.5) | 9.0 (5.3) | 3.6 (4.1) | 2.7 (3.3) | 0.0001a, b |
| Age group (%) | 0.0001a, b | ||||
| 65–74 | 62.4 | 27.9 | 52.2 | 60.5 | |
| 75–84 | 29.8 | 47.4 | 50.3 | 30.2 | |
| 85+ | 7.8 | 24.7 | 7.6 | 9.3 | |
| Diabetes, % | 24.0 | 20.1 | 32.3 | 23.3 | 0.0705 |
| Hypertension, % | 62.0 | 51.3 | 59.1 | 58.1 | 0.0001a |
| Heart Attack, % | 23.4 | 21.5 | 33.5 | 20.9 | 0.0217b |
| Stroke, % | 9.6 | 18.2 | 17.0 | 11.6 | 0.0001a, b |
Note: Subjects in the “Completed Follow-up” group contributed to the estimation of incidence by being either an incident CIND/MCI case or had at least one follow-up (screening or clinical assessment). The subjects in the “Prevalent Dementia & CIND/MCI” group consist of 65 baseline demented subjects and 89 of the 106 baseline CIND/MCI who did not convert back to normal at the 2-year follow-up. The subjects in the “Lost to Follow-up” group were all those who were not in the other three groups.
significant difference between “Completed Follow-up” and “Prevalent Dementia & CIND/MCI”
significant difference between “Completed Follow-up” and “Died before Follow-up”
significant difference between “Completed Follow-up” and “Lost to Follow-up”