| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.2%
|
| 1 | Yes, fully | 333 |
35.2%
|
| 2 | Yes, partially | 254 |
26.8%
|
| 3 | No | 358 |
37.8%
|