| Value | Category | Cases | |
|---|---|---|---|
| -99 | 11 |
3.7%
|
|
| 1 | Not effective at all | 13 |
4.4%
|
| 2 | 17 |
5.7%
|
|
| 3 | 14 |
4.7%
|
|
| 4 | 19 |
6.4%
|
|
| 5 | 24 |
8.1%
|
|
| 6 | 12 |
4%
|
|
| 7 | 30 |
10.1%
|
|
| 8 | 18 |
6.1%
|
|
| 9 | 13 |
4.4%
|
|
| 10 | Very effective | 20 |
6.7%
|
| 11 | Don't know | 106 |
35.7%
|
| Sysmiss | 29 |