| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
2.8%
|
| 3 | 2 |
5.6%
|
|
| 4 | 2 |
5.6%
|
|
| 5 | 5 |
13.9%
|
|
| 6 | 2 |
5.6%
|
|
| 7 | 10 |
27.8%
|
|
| 8 | 6 |
16.7%
|
|
| 9 | 2 |
5.6%
|
|
| 10 | Very effective | 6 |
16.7%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 50 |