| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
2.5%
|
| -8 | Refusal (spontaneous) | 0 |
0%
|
| 1 | Yes | 26 |
32.9%
|
| 2 | No | 51 |
64.6%
|
| Sysmiss | 946 |