| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 9 |
10%
|
| -8 | Refusal (spontaneous) | 10 |
11.1%
|
| 1 | Yes | 16 |
17.8%
|
| 2 | No | 55 |
61.1%
|
| Sysmiss | 938 |