| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 7 |
6.8%
|
| 2 | 3 |
2.9%
|
|
| 3 | 7 |
6.8%
|
|
| 4 | 3 |
2.9%
|
|
| 5 | 8 |
7.8%
|
|
| 6 | 11 |
10.7%
|
|
| 7 | 8 |
7.8%
|
|
| 8 | 9 |
8.7%
|
|
| 9 | 12 |
11.7%
|
|
| 10 | Very effective | 10 |
9.7%
|
| 11 | Don't know | 25 |
24.3%
|
| Sysmiss | 61 |