| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
3.5%
|
| 2 | 4 |
2.8%
|
|
| 3 | 12 |
8.3%
|
|
| 4 | 8 |
5.6%
|
|
| 5 | 24 |
16.7%
|
|
| 6 | 23 |
16%
|
|
| 7 | 26 |
18.1%
|
|
| 8 | 17 |
11.8%
|
|
| 9 | 16 |
11.1%
|
|
| 10 | Very effective | 9 |
6.3%
|
| 11 | Don't know | 61 | |
| Sysmiss | 33 |