| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
12.5%
|
| 2 | 7 |
17.5%
|
|
| 3 | 6 |
15%
|
|
| 4 | 5 |
12.5%
|
|
| 5 | 6 |
15%
|
|
| 6 | 3 |
7.5%
|
|
| 7 | 4 |
10%
|
|
| 8 | 4 |
10%
|
|
| 10 | Extremely effective | 0 |
0%
|
| 11 | Don't know | 40 | |
| 12 | Prefer not to answer | 34 | |
| Sysmiss | 20 |