| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
1%
|
| 0 | 21 |
21.6%
|
|
| 1 | 34 |
35.1%
|
|
| 2 | 25 |
25.8%
|
|
| 3 | 10 |
10.3%
|
|
| 4 | 5 |
5.2%
|
|
| 10 | 1 |
1%
|