Demographic Characteristics of Study Population
| Total Participants (n = 810) | Participants With TICS Score ≤30 (n = 155) | Participants With TICS Score >30 (n = 655) | Participants With Unverified Dementia Status and TICS Score >30 (n = 486) | |
|---|---|---|---|---|
| Age, y, mean (SD) | 84.5 (2.4) | 84.9 (2.4) | 84.3 (2.5) | 84.4 (2.4) |
| Female, No. (%) | 475 (58.6) | 80 (51.6) | 354 (54.0) | 291 (59.9) |
| Educational level, y, No. (%) | ||||
| <7 | 146 (18.0) | 46 (29.7) | 100 (15.3) | 77 (15.8) |
| 7-12 | 509 (62.8) | 90 (58.1) | 419 (64) | 326 (67.1) |
| >12 | 151 (18.6) | 19 (12.3) | 132 (20.2) | 80 (16.5) |
| MMSE score | ||||
| Mean (SD) | 28.8 (1.3) | 28.0 (1.7) | 29.0 (1.1) | 28.9 (1.2) |
| Median (IQR) | 29.0 (28.0-30.0) | 28 (27-29) | 29 (28-30) | 29 (28-30) |
| Comorbidities, No. (%) | ||||
| Heart disease | 187 (23.1) | 42 (27.1) | 145 (22.1) | 104 (21.4) |
| Stroke | 46 (5.7) | 14 (9.0) | 32 (4.9) | 22 (4.5) |
| Type 2 diabetes | 151 (18.6) | 29 (18.7) | 122 (18.6) | 100 (20.6) |
| Depression (GDS score ≥6) | 45 (5.5) | 18 (11.7) | 27 (4.1) | 20 (4.1) |
| TICS score, mean (SD) | 33.3 (3.4) | 28.0 (2.4) | 34.5 (2.2) | 34.5 (2.1) |
| Dementia, No. (%) | ||||
| Diagnosed | 13 (1.7) | 13 (8.4) | 0 | Dementia diagnosis not verified |
| Uncertaina | 10 (1.2) | 7 (4.5) | 3 (0.5) | Dementia diagnosis not verified |
| No dementia | 788 (97.3) | 134 (87.0) | 654 (99.8) | Dementia diagnosis not verified |
GDS = Geriatric Depression Scale; IQR = interquartile range; MMSE = Mini-Mental State Examination; TICS = Telephone Interview for Cognitive Status.
↵a Uncertain dementia was treated as no dementia.