| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 35 |
23.2%
|
| -7 | Doesn't apply | 0 |
0%
|
| 0 | 33 |
21.9%
|
|
| 1 | 42 |
27.8%
|
|
| 2 | 21 |
13.9%
|
|
| 3 | 8 |
5.3%
|
|
| 4 | 4 |
2.6%
|
|
| 5 | 6 |
4%
|
|
| 10 | 2 |
1.3%
|