| Value | Category |
|---|---|
| 1 | work in same county (agriculture) |
| 2 | work in same county (non-agriculture) |
| 3 | work outside county (agriculture) |
| 4 | work outside county (non-agriculture) |
| 5 | study in same county |
| 6 | study outside county |
| 7 | live outside |
| 8 | other, specify |
| Sysmiss |