| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 21 |
1.6%
|
| 1 | Yes, fully | 622 |
47.8%
|
| 2 | Yes, partially | 321 |
24.7%
|
| 3 | No | 336 |
25.8%
|