| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
0.8%
|
| -7 | Does not apply (spontaneous) | 9 |
2.5%
|
| 1 | Yes | 168 |
46.5%
|
| 2 | No | 181 |
50.1%
|