| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
2%
|
| -7 | Doesn't apply (spontaneous) | 4 |
2.6%
|
| 1 | Yes | 111 |
73.5%
|
| 2 | No | 33 |
21.9%
|