| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
5.4%
|
| 0 | 134 |
89.9%
|
|
| 10 | 1 |
0.7%
|
|
| 30 | 2 |
1.3%
|
|
| 45 | 1 |
0.7%
|
|
| 50 | 1 |
0.7%
|
|
| 100 | 2 |
1.3%
|