Table 2. Sociodemographic characteristics of the Aging Study of Pyeongchang Rural Area Cohort and the 6th Korea National Health and Nutrition Examination Survey.
| Characteristics | ASPRA % or mean (SD) |
KNHANES* | |
|---|---|---|---|
| Rural % or mean (SE) |
Urban % or mean (SE) |
||
| Sample size | 382 | 1,696,357 | 4,441,345 |
| Age, yr | 74.4 (6.5) | 74.4 (0.4) | 73.0 (0.2) |
| Male | 43.7 | 40.9 | 41.7 |
| Currently working | 60.7 | 39.0 | 23.3 |
| Engaged in agriculture | 53.4 | 25.1 | 3.2 |
| Education level, yr | 7.8 (5.0) | NA | NA |
| No formal education | 44.8 | 22.6 | 13.9 |
| ≤ 6 yr (elementary school) | 24.6 | 45.8 | 38.5 |
| 7-12 yr (middle or high school) | 22.2 | 19.5 | 33.7 |
| > 12 yr (college or higher) | 8.4 | 2.0 | 8.4 |
| Other | 0.0 | 10.1 | 5.5 |
| Medical aid (monthly income < USD 500) | 5.8 | 6.2 | 10.3 |
| Marital status | |||
| Married | 63.4 | 57.6 | 60.5 |
| Widowed | 33.0 | 40.8 | 33.9 |
| Divorced or separated | 2.9 | 1.6 | 0.8 |
| Other | 0.7 | 0.0 | 4.5 |
| Living status | |||
| Living alone | 22.8 | 26.4 | 19.6 |
| Living with family | 73.0 | 63.2 | 66.4 |
| Living with others | 3.7 | 10.3 | 14.0 |
| Other | 0.5 | 0.1 | 0.0 |
*Nationally representative estimates were derived by using sampling weights. NA, not available; ASPRA, Aging Study of Pyeongchang Rural Area; KNHANES, Korea National Health and Nutrition Examination Survey; SD, standard deviation; SE, standard error; USD, United States dollar.