| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | 8 |
5.9%
|
|
| 2 | 46 |
34.1%
|
|
| 3 | 47 |
34.8%
|
|
| 4 | 34 |
25.2%
|