| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | 49 |
40.8%
|
|
| 2 | 31 |
25.8%
|
|
| 3 | 20 |
16.7%
|
|
| 4 | 20 |
16.7%
|