| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 9 |
3.4%
|
| 2 | 3 |
1.1%
|
|
| 3 | 8 |
3%
|
|
| 4 | 10 |
3.7%
|
|
| 5 | 19 |
7.1%
|
|
| 6 | 13 |
4.9%
|
|
| 7 | 16 |
6%
|
|
| 8 | 21 |
7.8%
|
|
| 9 | 9 |
3.4%
|
|
| 10 | Very effective | 32 |
11.9%
|
| 11 | Don't know | 128 |
47.8%
|
| Sysmiss | 25 |