| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 29 |
4%
|
| -8 | Refusal (spontaneous) | 26 |
3.6%
|
| 1 | Yes | 172 |
23.7%
|
| 2 | No | 498 |
68.7%
|
| Sysmiss | 17932 |