| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 9 |
2.4%
|
| 1 | Yes, fully | 83 |
22.6%
|
| 2 | Yes, partially | 41 |
11.1%
|
| 3 | No | 235 |
63.9%
|