| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
5.4%
|
| 2 | 9 |
6.9%
|
|
| 3 | 13 |
10%
|
|
| 4 | 19 |
14.6%
|
|
| 5 | 23 |
17.7%
|
|
| 6 | 21 |
16.2%
|
|
| 7 | 17 |
13.1%
|
|
| 8 | 13 |
10%
|
|
| 9 | 6 |
4.6%
|
|
| 10 | Very effective | 2 |
1.5%
|
| 11 | Don't know | 62 | |
| Sysmiss | 6 |