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| Variables | Category | n (%) |
|---|---|---|
| Age | Mean ± SD | 73.1 ± 8.3 |
| Gender | Male | 108 (33.2) |
| Female | 217 (66.8) | |
| Education | ≤Middle school | 28 (70.3) |
| ≥High school | 97 (29.7) | |
| Marital status | Married | 277 (85.1) |
| Separated/divorced, widowed | 48 (14.9) | |
| Average monthly household income | ≤2 million won | 273 (83.9) |
| ≥2 million won | 52 (16.1) | |
| Smoking | Yes | 69 (21.3) |
| Drinking | Yes | 138 (42.5) |
| Physical function | Independence | 229 (70.5) |
| Depression | Yes | 105 (32.3) |
| Dentures | Yes | 266 (81.7) |
