| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 29 |
5.4%
|
| -8 | Refusal (spontaneous) | 23 |
4.3%
|
| 1 | Yes | 85 |
15.7%
|
| 2 | No | 404 |
74.7%
|
| Sysmiss | 18116 |