| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 21 |
3.5%
|
| 1 | Yes, fully | 133 |
22.2%
|
| 2 | Yes, partially | 118 |
19.7%
|
| 3 | No | 326 |
54.5%
|