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General characteristics of this study population
| Characteristics | Categories | N (%) or Mean±SD |
|---|---|---|
| Age (years) | Male | 73.2±0.4 |
| Female | 74.5±0.3 | |
| Sex | Male | 256 (47.8) |
| Female | 271 (52.2) | |
| Income (individual) | Quartile 1 (lowest) | 153 (30.8) |
| Quartile 2 | 138 (25.1) | |
| Quartile 3 | 119 (21.1) | |
| Quartile 4 (highest) | 117 (23.1) | |
| Spouse | Yes | 346 (62.3) |
| No | 181 (37.7) | |
| BMI (㎏/m2) | Underweight (<18.5) | 11 (2.3) |
| Normal (≥18.5, <25) | 296 (54.5) | |
| Overweight (≥25) | 220 (43.2) | |
| Smoking status | Current | 65 (11.6) |
| Former | 175 (33.3) | |
| Never | 287 (55.1) | |
| Alcohol drinking status | Yes | 250 (47.9) |
| No | 277 (52.1) | |
| Subject health status | Good | 56 (11.0) |
| Common | 203 (39.7) | |
| Poor | 268 (49.3) | |
| Activity limitation | Yes | 170 (32.3) |
| No | 357 (67.7) | |
| Depression (diagnosed by a doctor) | Yes | 52 (8.8) |
| No | 475 (91.2) |
Mean±SD. BMI: body mass index.