| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.2%
|
| 1 | Yes, fully | 133 |
30.9%
|
| 2 | Yes, partially | 80 |
18.6%
|
| 3 | No | 216 |
50.2%
|