| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 18 |
11.9%
|
| 0 | 101 |
66.9%
|
|
| 2 | 1 |
0.7%
|
|
| 5 | 5 |
3.3%
|
|
| 10 | 11 |
7.3%
|
|
| 15 | 2 |
1.3%
|
|
| 20 | 5 |
3.3%
|
|
| 22 | 1 |
0.7%
|
|
| 25 | 5 |
3.3%
|
|
| 30 | 1 |
0.7%
|
|
| 60 | 1 |
0.7%
|