| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
1.2%
|
| 2 | 5 |
1.5%
|
|
| 3 | 10 |
3%
|
|
| 4 | 12 |
3.6%
|
|
| 5 | 22 |
6.6%
|
|
| 6 | 39 |
11.8%
|
|
| 7 | 49 |
14.8%
|
|
| 8 | 37 |
11.2%
|
|
| 9 | 25 |
7.6%
|
|
| 10 | Very effective | 34 |
10.3%
|
| 11 | Don't know | 94 |
28.4%
|
| Sysmiss | 23 |