| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
3.1%
|
| -8 | Refusal (spontaneous) | 4 |
2.1%
|
| 1 | Yes | 17 |
8.7%
|
| 2 | No | 168 |
86.2%
|
| Sysmiss | 207 |