| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | 26 |
19.3%
|
|
| 2 | 52 |
38.5%
|
|
| 3 | 46 |
34.1%
|
|
| 4 | 11 |
8.1%
|