| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
3.9%
|
| -8 | Refusal (spontaneous) | 0 |
0%
|
| 1 | Yes | 11 |
10.7%
|
| 2 | No | 88 |
85.4%
|
| Sysmiss | 130 |