| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 243 |
3.7%
|
| -8 | Refusal (spontaneous) | 362 |
5.5%
|
| 1 | Yes | 1157 |
17.5%
|
| 2 | No | 4867 |
73.4%
|
| Sysmiss | 12028 |