| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 6 |
4.4%
|
|
| 1 | 75 |
55.6%
|
|
| 2 | 36 |
26.7%
|
|
| 3 | 15 |
11.1%
|
|
| 4 | 3 |
2.2%
|