| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 10 |
5.9%
|
| 2 | 6 |
3.6%
|
|
| 3 | 10 |
5.9%
|
|
| 4 | 12 |
7.1%
|
|
| 5 | 15 |
8.9%
|
|
| 6 | 12 |
7.1%
|
|
| 7 | 8 |
4.7%
|
|
| 8 | 8 |
4.7%
|
|
| 9 | 22 |
13%
|
|
| 10 | Very effective | 18 |
10.7%
|
| 11 | Don't know | 1 |
0.6%
|
| 12 | Not applicable | 47 |
27.8%
|
| Sysmiss | 38 |