| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
5.7%
|
| -8 | Refusal (spontaneous) | 2 |
2.3%
|
| 1 | Yes | 57 |
65.5%
|
| 2 | No | 23 |
26.4%
|
| Sysmiss | 290 |