Table 1.
Demographic and clinical characteristics of the participants.
| Variables | Total (n = 644) | M-China (n = 154) | Japan (n = 235) | S-Korea (n = 97) | Taiwan (n = 97) | Thailand (n = 61) |
|---|---|---|---|---|---|---|
| Female, n (%) | 375 (58.2) | 99 (64.3) | 170 (72.3) | 75 (77.3) | 0 (0) | 31 (50.8) |
| Age (yr), mean ± SD | 83.42 ± 7.67 | 81.25 ± 7.73 | 84.30 ± 7.31 | 84.75 ± 7.15 | 87.23 ± 6.23 | 77.38 ± 6.92 |
| Education (yr), mean ± SD | 3.36 ± 1.61 | 2.86 ± 1.38 | 4.50 ± 1.45 | 3.01 ± 1.46 | 2.58 ± 0.73 | 1.82 ± 0.93 |
| MMSE, mean ± SD | 10.10 ± 7.31 | 7.11 ± 7.23 | 11.14 ± 7.59 | 8.81 ± 6.96 | 13.98 ± 6.09 | 9.95 ± 5.14 |
| CDR = 1, n (%) | 157 (24.4) | 19 (12.3) | 65 (27.7) | 7 (7.2) | 42 (43.3) | 24 (39.3) |
| CDR = 2, n (%) | 226 (35.1) | 54 (35.1) | 85 (36.2) | 32 (33.0) | 35 (36.1) | 20 (32.8) |
| CDR = 3, n (%) | 261 (40.5) | 81 (52.6) | 85 (36.2) | 58 (59.8) | 20 (20.6) | 17 (27.9) |
| BI score, mean ± SD | 9.55 ± 6.27 | 8.21 ± 6.41 | 9.23 ± 5.83 | 5.28 ± 5.11 | 12.62 ± 3.68 | 16.04 ± 5.22 |
| Length of stay (month), mean ± SD | 39.37 ± 40.79 | 44.51 ± 36.93 | 39.67 ± 43.91 | 29.36 ± 37.25 | 31.61 ± 23.73 | 54.13 ± 9.52 |
| NPI-NH score, mean ± SD | 15.16 ± 13.19 | 16.67 ± 12.71 | 15.03 ± 13.08 | 18.84 ± 15.43 | 10.83 ± 13.09 | 11.29 ± 9.01 |
M-China, mainland China; S-Korea, South Korea; MMSE, Mini-Mental State Exam; CDR, Clinical Dementia rating; BI, Barthel Index; NPI-NH, Neuropsychiatric inventory-nursing home. Missing data: MMSE (n = 26, 4.0%) and NPI-NH (n = 138, 21.4%).