| Classification | N | % | |
|---|---|---|---|
| Region | Taebaek-si | 62 | 67.4 |
| Jeongseon-gun | 25 | 27.2 | |
| Age group | 40’s | 4 | 4.6 |
| 50’s | 10 | 11.5 | |
| 60’s | 26 | 29.9 | |
| 70’s | 31 | 35.6 | |
| over 80’s | 16 | 18.4 | |
| Non-response | 0 | 0 | |
| Mining profession | YES | 29 | 33.3 |
| NO | 58 | 66.7 | |
| Non-response | 0 | 0 | |
| Length of residence | <10 | 8 | 9.2 |
| <20 | 3 | 3.4 | |
| <30 | 6 | 6.9 | |
| <40 | 14 | 16.1 | |
| 40≥ | 55 | 63.2 | |
| Non-response | 1 | 1.1 | |