| Value | Category |
|---|---|
| 1 | receives earnings |
| 2 | receives public assistance |
| 3 | receives both |
| 4 | does not receive earnings or public assistance |
| 5 | receives public assistance, but earnings missing |
| 6 | receives earnings, but public assistance missing |
| 7 | doesn't receive public assistance, but earnings missing |
| 999 | don't know and/or refused |