| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 65 |
58.6%
|
|
| 1 | 30 |
27%
|
|
| 2 | 11 |
9.9%
|
|
| 3 | 3 |
2.7%
|
|
| 4 | 2 |
1.8%
|