| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
3.7%
|
| 2 | 2 |
1.5%
|
|
| 3 | 9 |
6.7%
|
|
| 4 | 5 |
3.7%
|
|
| 5 | 17 |
12.6%
|
|
| 6 | 27 |
20%
|
|
| 7 | 31 |
23%
|
|
| 8 | 25 |
18.5%
|
|
| 9 | 7 |
5.2%
|
|
| 10 | Very effective | 7 |
5.2%
|
| 11 | Don't know | 108 | |
| Sysmiss | 26 |