Table 1.
Characteristics of the participants.
| Characteristic | Derivation cohort | Validation cohort | |||||
|
|
Control (n=75) | MCIa (n=37) | Dementia (n=33) | Control (n=51) | MCI (n=17) | Dementia (n=30) | |
| Mean age (years), mean (SD) | 70.2 (8.1) | 76.1 (6.3) | 78.6 (7.1) | 70.0 (9.3) | 78.4 (7.6) | 79.8 (7.5) | |
| Females, n (%) | 60 (80) | 19 (51) | 26 (79) | 40 (78) | 12 (71) | 20 (67) | |
| Education level, n (%) |
|
|
|
|
|
|
|
|
|
Primary level or below | 29 (39) | 18 (49) | 18 (55) | 13 (25) | 12 (71) | 23 (77) |
|
|
Secondary level or above | 46 (61) | 19 (51) | 15 (45) | 38 (75) | 5 (29) | 7 (23) |
| HK-MoCAb score, mean (SD) | 24.4 (3.3) | 20.1 (3.7) | 12.2 (6.4) | 23.9 (3.9) | 19.7 (4.4) | 13.8 (5.1) | |
| Z-score of EC-Screenc subtests, mean (SD) |
|
|
|
|
|
|
|
|
|
Clock-setting test | 1.24 (1.5) | 1.22 (1.5) | 0.73 (1.3) | 1.41 (1.5) | 0.88 (1.4) | 1.40 (1.5) |
|
|
Delayed recognition test | 3.52 (1.4) | 2.97 (1.3) | 1.45 (1.2) | 3.67 (1.4) | 2.59 (1.5) | 1.43 (1.5) |
|
|
Story test | 1.08 (1.5) | 0.81 (1.4) | 0.55 (1.2) | 1.18 (1.5) | 1.59 (1.5) | 0.90 (1.4) |
| Time spent on EC-Screen subtests (seconds), mean (SD) |
|
|
|
|
|
|
|
|
|
Clock-setting test | 31.7 (13.9) | 39.6 (16.8) | 68.4 (51.3) | 31.6 (12.4) | 49.4 (27.6) | 67.5 (42.0) |
|
|
Delayed recognition test | 28.0 (12.4) | 36.3 (15.7) | 43.8 (24.2) | 30.3 (14.9) | 48.2 (26.2) | 55.6 (34.0) |
|
|
Story test | 75.3 (11.9) | 75.8 (18.3) | 89.1 (23.4) | 73.7 (10.2) | 84.7 (13.7) | 87.6 (24.3) |
aMCI: mild cognitive impairment.
bHK-MoCA: Hong Kong version of Montreal Cognitive Assessment.
cEC-Screen: Electronic Cognitive Screen.