| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.2%
|
| 2 | 2 |
1.2%
|
|
| 3 | 8 |
5%
|
|
| 4 | 8 |
5%
|
|
| 5 | 19 |
11.8%
|
|
| 6 | 17 |
10.6%
|
|
| 7 | 40 |
24.8%
|
|
| 8 | 38 |
23.6%
|
|
| 9 | 15 |
9.3%
|
|
| 10 | Very effective | 12 |
7.5%
|
| 11 | Don't know | 59 | |
| Sysmiss | 33 |