| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
5.1%
|
| 2 | 3 |
1.9%
|
|
| 3 | 8 |
5.1%
|
|
| 4 | 10 |
6.4%
|
|
| 5 | 18 |
11.5%
|
|
| 6 | 13 |
8.3%
|
|
| 7 | 8 |
5.1%
|
|
| 8 | 12 |
7.7%
|
|
| 9 | 12 |
7.7%
|
|
| 10 | Very effective | 8 |
5.1%
|
| 11 | Don't know | 56 |
35.9%
|
| 12 | Not applicable | 0 |
0%
|
| Sysmiss | 51 |