| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
1.9%
|
| -8 | Refusal (spontaneous) | 3 |
2.9%
|
| 1 | Yes | 20 |
19.2%
|
| 2 | No | 79 |
76%
|
| Sysmiss | 1328 |