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Socio-demographic characteristics
| Item | Division | n (%) |
|---|---|---|
| Gender | Men | 1,892 (39.0) |
| Women | 2,916 (61.0) | |
| Age (yr) | <30 | 499 (10.4) |
| 30-39 | 800 (16.7) | |
| 40-49 | 783 (16.4) | |
| 50-59 | 899 (18.8) | |
| 60-69 | 901 (18.9) | |
| ≥70 | 896 (18.8) | |
| Educational level | Elementary and below graduation | 1,316 (27.5) |
| Middle school graduation | 509 (10.7) | |
| High school graduation | 1,576 (33.0) | |
| University graduation and above | 1,377 (28.8) | |
| Average monthly income (million won) | <1 | 854 (17.9) |
| 1 to <2 | 780 (16.3) | |
| 2 to <3 | 823 (17.2) | |
| 3 to <4 | 657 (13.8) | |
| 4 to <5 | 538 (11.3) | |
| ≥5 | 1,126 (23.6) | |
| Marital status | Married | 4,160 (87.1) |
| Unmarried | 618 (12.9) |
By frequency analysis.