| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 457 |
15.5%
|
| 1 | Yes, fully | 825 |
27.9%
|
| 2 | Yes, partially | 335 |
11.3%
|
| 3 | No | 1338 |
45.3%
|