| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
4.4%
|
| 2 | 8 |
5%
|
|
| 3 | 17 |
10.6%
|
|
| 4 | 12 |
7.5%
|
|
| 5 | 30 |
18.8%
|
|
| 6 | 23 |
14.4%
|
|
| 7 | 28 |
17.5%
|
|
| 8 | 22 |
13.8%
|
|
| 9 | 7 |
4.4%
|
|
| 10 | Very effective | 6 |
3.8%
|
| 11 | Don't know | 61 | |
| Sysmiss | 41 |