| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
1.3%
|
| 1 | Yes, fully | 4 |
2.5%
|
| 2 | Yes, partially | 9 |
5.7%
|
| 3 | No | 142 |
90.4%
|