| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 25 |
6.9%
|
| -8 | Refusal (spontaneous) | 10 |
2.8%
|
| -7 | 5 |
1.4%
|
|
| 1 | Yes | 62 |
17.2%
|
| 2 | No | 258 |
71.7%
|
| Sysmiss | 9016 |