| Characteristics Categories | Sample | |||
| N (%) | Mean (±SD) | |||
| Age (years) | 0 - 24 | 2640 (29.5) | 39.3 (±22.7) | |
| 25 - 44 | 2455 (27.4) | |||
| 45 - 64 | 2385 (26.6) | |||
| 65+ | 1478 (16.5) | |||
| Sex | Male | 4071 (45.5) | ||
| Female | 4887 (54.5) | |||
| Education | | 3598 (40.9) | ||
| Middle/high school | 3204 (36.4) | |||
| Post-high school | 1999 (22.7) | |||
| Marital status | Married | 5781 (64.6) | ||
| Others | 3171 (35.4) | |||
| Residence | Urban | 6973 (77.8) | ||
| Rural | 1985 (22.2) | |||
| Family income# | 0 - 4,000,000 won | 5791 (65.6) | 4,293,000 (±8,222,000) | |
| >4,000,000 won | 3033 (34.4) | |||
| Working status | Unemployed | 2966 (43.0) | ||
| Employed | 3933 (57.0) | |||
| Chronic diseases* | Yes | 3356 (37.5) | ||
| No | 5602 (62.5) | |||
| Health status | Poor/very poor | 3703 (44.2) | ||
| Fair | 3253 (38.9) | |||
| Good/very good | 1414 (16.9) | |||