| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.6%
|
| 1 | Yes, fully | 25 |
6.9%
|
| 2 | Yes, partially | 30 |
8.3%
|
| 3 | No | 303 |
84.2%
|