| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 555 |
18.8%
|
| 1 | Yes, fully | 550 |
18.6%
|
| 2 | Yes, partially | 326 |
11%
|
| 3 | No | 1524 |
51.6%
|