Table 1.
Baseline characteristics in participants with complete data sets and participants for whom we imputed data
| Participants with complete data (n = 743) | Participants with imputed data (n = 37,893) | |
|---|---|---|
| Age (years)* | 71.8 (5.2) | 71.8 (5.2) |
| Sex (% male) | 53.8 | 53.8 |
| Education (years)* | 11.3 (2.5) | 11.3 (2.5) |
| Current smoking (% yes) | 10.6 | 10.6 |
| Heart disease (% yes) | 17.5 | 17.5 |
| Pulmonary disease (% yes) | 8.7 | 8.7 |
| Hypertension (% yes) | 47.5 | 47.5 |
| Diabetes mellitus (% yes) | 15.1 | 15.1 |
| Walking speed (m/s)* | 1.2 (0.2) | 1.2 (0.2) |
| Mini-mental state examination (points)* | 26.5 (1.8) | 26.5 (1.8) |
| Geriatric depression scale (points)* | 3.1 (2.6) | 3.1 (2.6) |
| Category of MCI (% yes) | ||
| Amnestic MCI single domain | 14.3 | 14.3 |
| Non-amnestic MCI single domain | 62.2 | 62.2 |
| Amnestic MCI multiple domain | 6.7 | 6.7 |
| Non-amnestic MCI multiple domain | 16.8 | 16.8 |
| Instrumental activities of daily living (% yes) | ||
| Going outdoors using bus and train | 89.3 | 89.3 |
| Cash handling and banking | 88.6 | 88.6 |
| Driving a car | 67.5 | 67.5 |
| Using map to go unfamiliar place | 57.9 | 57.9 |
| Cognitive activity (% yes) | ||
| Reading of book or newspaper | 94.1 | 94.1 |
| Cognitive stimulation such as board game and learning | 44.2 | 44.2 |
| Culture lesson | 39.4 | 39.4 |
| Using personal computer | 28 | 26.8 |
| Social activity (% yes) | ||
| Daily conversation | 95.4 | 95.4 |
| Giving someone a helping hand | 89.7 | 89.7 |
| Attending a meeting in the community | 52.4 | 52.4 |
| Hobby or sports activity | 69.4 | 69.4 |
| Productive activity (% yes) | ||
| Housecleaning | 87.7 | 87.7 |
| Field work or gardening | 72.9 | 72.9 |
| Taking care of grandchild or pet | 54.4 | 54.4 |
| Working | 30.4 | 30.4 |
*Mean (standard deviation)