| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
7.4%
|
| 3 | 2 |
3.7%
|
|
| 4 | 3 |
5.6%
|
|
| 5 | 11 |
20.4%
|
|
| 6 | 5 |
9.3%
|
|
| 7 | 10 |
18.5%
|
|
| 8 | 9 |
16.7%
|
|
| 9 | 2 |
3.7%
|
|
| 10 | Very effective | 8 |
14.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 55 |