| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 11 |
9.2%
|
| 0 | 1 |
0.8%
|
|
| 1 | 15 |
12.5%
|
|
| 2 | 26 |
21.7%
|
|
| 3 | 19 |
15.8%
|
|
| 4 | 19 |
15.8%
|
|
| 5 | 12 |
10%
|
|
| 6 | 4 |
3.3%
|
|
| 8 | 4 |
3.3%
|
|
| 9 | 1 |
0.8%
|
|
| 10 | 5 |
4.2%
|
|
| 13 | 1 |
0.8%
|
|
| 15 | 1 |
0.8%
|
|
| 40 | 1 |
0.8%
|