| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 |
1.1%
|
| -8 | Refusal (spontaneous) | 8 |
1.2%
|
| 1 | Yes | 93 |
14.4%
|
| 2 | No | 537 |
83.3%
|
| Sysmiss | 356 |