| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | 15 |
11.1%
|
|
| 2 | 45 |
33.3%
|
|
| 3 | 48 |
35.6%
|
|
| 4 | 26 |
19.3%
|
|
| 5 | 1 |
0.7%
|