| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.3%
|
| 1 | Yes, fully | 134 |
35.7%
|
| 2 | Yes, partially | 8 |
2.1%
|
| 3 | No | 232 |
61.9%
|