| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
3.8%
|
| 2 | 1 |
1.3%
|
|
| 3 | 5 |
6.4%
|
|
| 4 | 3 |
3.8%
|
|
| 5 | 9 |
11.5%
|
|
| 6 | 9 |
11.5%
|
|
| 7 | 9 |
11.5%
|
|
| 8 | 22 |
28.2%
|
|
| 9 | 13 |
16.7%
|
|
| 10 | Very effective | 4 |
5.1%
|
| 11 | Don't know | 51 | |
| Sysmiss | 9 |