| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 15 |
2%
|
| -8 | Refusal (spontaneous) | 22 |
2.9%
|
| 1 | Yes | 240 |
31.8%
|
| 2 | No | 477 |
63.3%
|
| Sysmiss | 17903 |