| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 19 |
2.1%
|
| -8 | Refusal (spontaneous) | 17 |
1.8%
|
| 1 | Yes | 123 |
13.3%
|
| 2 | No | 767 |
82.8%
|
| Sysmiss | 506 |