| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 135 |
24.4%
|
| -7 | Does not apply (spontaneous) | 14 |
2.5%
|
| 1 | Yes | 151 |
27.3%
|
| 2 | No | 254 |
45.8%
|