| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
3.1%
|
| 0 | 18 |
18.6%
|
|
| 1 | 35 |
36.1%
|
|
| 2 | 22 |
22.7%
|
|
| 3 | 9 |
9.3%
|
|
| 4 | 9 |
9.3%
|
|
| 10 | 1 |
1%
|