| Value | Category |
|---|---|
| -99 | Refuse to answer |
| -98 | Difficult to answer/Don't remember |
| -97 | Don't know/No information |
| -9 | Interrupted interview |
| -7 | Legal Skip |
| -3 | Interviewer error |
| 1 | Yes, regularly |
| 2 | Yes, sometimes |
| 3 | Yes, rarely |
| 4 | No, HH members help(ed) him/her |
| 5 | No, not possible |
| 6 | No, can not |
| 7 | No, no need |
| 8 | No, no desire |
| Sysmiss |