| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 437 |
14.8%
|
| 1 | Yes, fully | 874 |
29.6%
|
| 2 | Yes, partially | 323 |
10.9%
|
| 3 | No | 1321 |
44.7%
|