| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
2.6%
|
| 2 | 5 |
1.9%
|
|
| 3 | 9 |
3.4%
|
|
| 4 | 6 |
2.2%
|
|
| 5 | 13 |
4.9%
|
|
| 6 | 15 |
5.6%
|
|
| 7 | 11 |
4.1%
|
|
| 8 | 24 |
9%
|
|
| 9 | 11 |
4.1%
|
|
| 10 | Very effective | 41 |
15.3%
|
| 11 | Don't know | 126 |
47%
|
| Sysmiss | 25 |