| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
2.9%
|
| -8 | Refusal (spontaneous) | 5 |
3.6%
|
| 1 | Yes | 7 |
5.1%
|
| 2 | No | 121 |
88.3%
|
| Sysmiss | 1436 |