| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 2 |
2.4%
|
|
| 3 | 2 |
2.4%
|
|
| 4 | 8 |
9.4%
|
|
| 5 | 20 |
23.5%
|
|
| 6 | 9 |
10.6%
|
|
| 7 | 11 |
12.9%
|
|
| 8 | 22 |
25.9%
|
|
| 9 | 6 |
7.1%
|
|
| 10 | Very effective | 5 |
5.9%
|
| 11 | Don't know | 81 | |
| Sysmiss | 28 |