| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
3.9%
|
| 2 | 9 |
7%
|
|
| 3 | 15 |
11.6%
|
|
| 4 | 13 |
10.1%
|
|
| 5 | 21 |
16.3%
|
|
| 6 | 17 |
13.2%
|
|
| 7 | 22 |
17.1%
|
|
| 8 | 10 |
7.8%
|
|
| 9 | 7 |
5.4%
|
|
| 10 | Very effective | 10 |
7.8%
|
| 11 | Don't know | 75 | |
| Sysmiss | 34 |