| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
2.2%
|
| 2 | 7 |
3.9%
|
|
| 3 | 14 |
7.9%
|
|
| 4 | 21 |
11.8%
|
|
| 5 | 25 |
14%
|
|
| 6 | 21 |
11.8%
|
|
| 7 | 30 |
16.9%
|
|
| 8 | 32 |
18%
|
|
| 9 | 14 |
7.9%
|
|
| 10 | Very effective | 10 |
5.6%
|
| 11 | Don't know | 47 | |
| Sysmiss | 37 |