| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 158 |
28.5%
|
| -8 | Refusal (spontaneous) | 15 |
2.7%
|
| 1 | Yes | 46 |
8.3%
|
| 2 | No | 335 |
60.5%
|