| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
5%
|
| -8 | Refusal (spontaneous) | 1 |
2.5%
|
| 1 | Yes | 11 |
27.5%
|
| 2 | No | 26 |
65%
|
| Sysmiss | 362 |