| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
3%
|
| 2 | 2 |
3%
|
|
| 3 | 8 |
12.1%
|
|
| 4 | 7 |
10.6%
|
|
| 5 | 7 |
10.6%
|
|
| 6 | 12 |
18.2%
|
|
| 7 | 14 |
21.2%
|
|
| 8 | 8 |
12.1%
|
|
| 9 | 4 |
6.1%
|
|
| 10 | Very effective | 2 |
3%
|
| 11 | Don't know | 48 | |
| Sysmiss | 20 |