| Value | Category |
|---|---|
| 1 | Kinh/Hoa + Permanent registration |
| 2 | Kinh/Hoa + Long-term temporary residents |
| 3 | Kinh/Hoa + Short-term temporary residents |
| 4 | ethnic_indi minorities + Permanent registration |
| 5 | ethnic_indi minorities + Long-term temporary residents |
| 6 | ethnic_indi minorities + Short-term temporary residents |
| 7 | Other |