| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
4.8%
|
| 2 | 7 |
5.6%
|
|
| 3 | 13 |
10.4%
|
|
| 4 | 6 |
4.8%
|
|
| 5 | 17 |
13.6%
|
|
| 6 | 18 |
14.4%
|
|
| 7 | 22 |
17.6%
|
|
| 8 | 22 |
17.6%
|
|
| 9 | 12 |
9.6%
|
|
| 10 | Very effective | 2 |
1.6%
|
| 11 | Don't know | 112 | |
| Sysmiss | 52 |