| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 14 |
3.9%
|
| -7 | Does not apply (spontaneous) | 13 |
3.6%
|
| 1 | Yes | 166 |
46%
|
| 2 | No | 168 |
46.5%
|