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The general characteristics of research participants
| Characteristic | No. (%) |
|---|---|
| Age (yr) | |
| 60–65 | 77 (52.0) |
| 66–81 | 71 (48.0) |
|
| |
| Education | |
| Middle school | 48 (32.4) |
| High school | 75 (50.7) |
| Beyond undergraduate level | 25 (16.9) |
|
| |
| Monthly allowance | |
| <KRW 300,000 | 21 (14.2) |
| KRW 300,000–400,000 | 34 (23.0) |
| KRW 400,000–500,000 | 54 (36.5) |
| >KRW 500,000 | 39 (26.4) |
KRW, Korean won (the currency of the South Korea).
