| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 101 |
10.1%
|
| 1 | Yes, fully | 294 |
29.3%
|
| 2 | Yes, partially | 134 |
13.4%
|
| 3 | No | 473 |
47.2%
|