| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
1.3%
|
| -7 | Does not apply (spontaneous) | 5 |
2.1%
|
| 1 | Yes | 138 |
57.5%
|
| 2 | No | 94 |
39.2%
|