| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
6.7%
|
| -8 | Refusal (spontaneous) | 3 |
20%
|
| 1 | Yes | 1 |
6.7%
|
| 2 | No | 10 |
66.7%
|
| Sysmiss | 597 |