| Value | Category |
|---|---|
| 1 | Working in public sector |
| 2 | Working in private/foreign invested sector |
| 3 | Retired |
| 4 | Policy beneficiaries |
| 5 | Poor people/ethnic minority/P135 commune |
| 6 | Other social protection groups |
| 7 | Those over 90 |
| 8 | Relatives of military officers |
| 9 | Others |
| 10 | No idea |
| Sysmiss |