| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
3.4%
|
| 2 | 6 |
3.4%
|
|
| 3 | 5 |
2.9%
|
|
| 4 | 12 |
6.9%
|
|
| 5 | 23 |
13.1%
|
|
| 6 | 14 |
8%
|
|
| 7 | 14 |
8%
|
|
| 8 | 13 |
7.4%
|
|
| 9 | 9 |
5.1%
|
|
| 10 | Very effective | 2 |
1.1%
|
| 11 | Don't know | 71 |
40.6%
|
| Sysmiss | 5 |