| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | 28 |
23.3%
|
|
| 2 | 31 |
25.8%
|
|
| 3 | 19 |
15.8%
|
|
| 4 | 32 |
26.7%
|
|
| 5 | 3 |
2.5%
|
|
| 6 | 3 |
2.5%
|
|
| 7 | 2 |
1.7%
|
|
| 20 | 1 |
0.8%
|
|
| 25 | 1 |
0.8%
|