| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
3.1%
|
| 2 | 3 |
3.1%
|
|
| 3 | 3 |
3.1%
|
|
| 4 | 6 |
6.3%
|
|
| 5 | 18 |
18.8%
|
|
| 6 | 20 |
20.8%
|
|
| 7 | 18 |
18.8%
|
|
| 8 | 17 |
17.7%
|
|
| 9 | 7 |
7.3%
|
|
| 10 | Extremely effective | 1 |
1%
|
| 11 | Don't know | 13 | |
| 12 | Prefer not to answer | 17 | |
| Sysmiss | 8 |