| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
5.2%
|
| 2 | 10 |
7.5%
|
|
| 3 | 16 |
11.9%
|
|
| 4 | 20 |
14.9%
|
|
| 5 | 22 |
16.4%
|
|
| 6 | 18 |
13.4%
|
|
| 7 | 20 |
14.9%
|
|
| 8 | 16 |
11.9%
|
|
| 9 | 2 |
1.5%
|
|
| 10 | Very effective | 3 |
2.2%
|
| 11 | Don't know | 58 | |
| Sysmiss | 6 |