| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.9%
|
| 2 | 3 |
1.9%
|
|
| 3 | 9 |
5.7%
|
|
| 4 | 17 |
10.8%
|
|
| 5 | 22 |
13.9%
|
|
| 6 | 29 |
18.4%
|
|
| 7 | 30 |
19%
|
|
| 8 | 31 |
19.6%
|
|
| 9 | 9 |
5.7%
|
|
| 10 | Very effective | 5 |
3.2%
|
| 11 | Don't know | 84 | |
| Sysmiss | 27 |