| Value | Category |
|---|---|
| 1 | Rural area of the district |
| 2 | Urban area of the same district |
| 3 | Rural area of another district in the same state |
| 4 | Urban area of another district in the same state |
| 5 | Rural area of another state |
| 6 | Urban area of another state |
| 7 | Another country |
| Sysmiss |