| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 12 |
3.3%
|
| -7 | Does not apply (spontaneous) | 12 |
3.3%
|
| 1 | Yes | 183 |
50.7%
|
| 2 | No | 154 |
42.7%
|