| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 18 |
9.5%
|
| -8 | Refusal (spontaneous) | 28 |
14.7%
|
| 1 | Yes | 35 |
18.4%
|
| 2 | No | 109 |
57.4%
|