| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 11 |
9.5%
|
| 2 | 9 |
7.8%
|
|
| 3 | 7 |
6%
|
|
| 4 | 9 |
7.8%
|
|
| 5 | 19 |
16.4%
|
|
| 6 | 18 |
15.5%
|
|
| 7 | 20 |
17.2%
|
|
| 8 | 14 |
12.1%
|
|
| 9 | 7 |
6%
|
|
| 10 | Very effective | 2 |
1.7%
|
| 11 | Don't know | 118 | |
| Sysmiss | 55 |