| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
8%
|
| -8 | Refusal (spontaneous) | 5 |
20%
|
| 1 | Yes | 7 |
28%
|
| 2 | No | 11 |
44%
|
| Sysmiss | 573 |