| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 20 |
23.5%
|
| -8 | Refusal (spontaneous) | 7 |
8.2%
|
| -7 | 2 |
2.4%
|
|
| 1 | Yes | 21 |
24.7%
|
| 2 | No | 35 |
41.2%
|
| Sysmiss | 913 |