Table 2 Background characteristics of the study participants according to the recruitment scheme
| Â | Â | In-home interview only | In-home interview plus Medical/dental examination | Self/proxy completed data only | |||
|---|---|---|---|---|---|---|---|
| Â | Â | n = 442 | n = 542 | n = 168 | |||
Gender | Male | 26.0 | (115) | 43.5 | (236) | 26.2 | (44) |
| Â | Female | 74.0 | (327) | 56.5 | (306) | 73.8 | (124) |
Age | 85-89 | 78.5 | (347) | 91.5 | (496) | 48.2 | (81) |
| Â | 90-94 | 18.1 | (80) | 7.0 | (38) | 41.1 | (69) |
| Â | 95-99 | 2.9 | (13) | 1.1 | (6) | 9.5 | (16) |
| Â | 100+ | 0.5 | (2) | 0.4 | (2) | 1.2 | (2) |
Living condition | |||||||
alone | 40.6 | (179) | 34.0 | (183) | NA | ||
with spouse only | 28.6 | (126) | 27.0 | (145) | NA | ||
with others | 30.7 | (135) | 39.0 | (210) | NA | ||
Education | |||||||
Higher education | 10.6 | (47) | 20.1 | (109) | NA | ||
Self-rated health | |||||||
Excellent to good | 52.2 | (230) | 51.0 | (274) | NA | ||
Fair to poor | 47.8 | (211) | 49.0 | (263) | NA | ||
Subjective economic status | |||||||
Excellent to good | 62.2 | (255) | 72.8 | (378) | 57.4 | (93) | |
Fair to poor | 37.8 | (155) | 27.2 | (141) | 42.6 | (69) | |
MMSE | |||||||
mean (SD) | 23.7 | (4.9) | 26.2 | (3.9) | NA | ||
median [IQR] | 24 | [21-27.5] | 27 | [24-29] | NA | ||
Barthel index | |||||||
mean (SD) | 78.7 | (31.4) | 97.1 | (8.2) | 56 | (37) | |
median [IQR] | 95 | [70-100] | 100 | [95-100] | 60 | [20-95] | |