| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
1.4%
|
| -8 | Refusal (spontaneous) | 5 |
1.2%
|
| 1 | Yes | 99 |
22.8%
|
| 2 | No | 324 |
74.7%
|
| Sysmiss | 1012 |