| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 18 |
8.2%
|
| 0 | 1 |
0.5%
|
|
| 1 | 5 |
2.3%
|
|
| 2 | 36 |
16.4%
|
|
| 3 | 43 |
19.6%
|
|
| 4 | 60 |
27.4%
|
|
| 5 | 16 |
7.3%
|
|
| 6 | 13 |
5.9%
|
|
| 7 | 3 |
1.4%
|
|
| 8 | 5 |
2.3%
|
|
| 9 | 1 |
0.5%
|
|
| 10 | 6 |
2.7%
|
|
| 11 | 3 |
1.4%
|
|
| 12 | 1 |
0.5%
|
|
| 13 | 1 |
0.5%
|
|
| 15 | 3 |
1.4%
|
|
| 17 | 1 |
0.5%
|
|
| 19 | 1 |
0.5%
|
|
| 20 | 1 |
0.5%
|
|
| 25 | 1 |
0.5%
|