| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
5.1%
|
| -8 | Refusal (spontaneous) | 1 |
2.6%
|
| 1 | Yes | 15 |
38.5%
|
| 2 | No | 21 |
53.8%
|
| Sysmiss | 315 |