| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 19 |
1.3%
|
| -7 | Does not apply (spontaneous) | 28 |
2%
|
| 1 | Yes | 628 |
44.5%
|
| 2 | No | 735 |
52.1%
|