| Value | Category |
|---|---|
| 1 | Kinh/Hoa + Same district registration |
| 2 | Kinh/Hoa + Other district registration |
| 3 | Kinh/Hoa + Other province registration |
| 4 | Ethnic minorities + Same district registration |
| 5 | Ethnic minorities + Other district registration |
| 6 | Ethnic minorities + Other province registration |
| 7 | Other |