| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.5%
|
| 2 | 3 |
2.3%
|
|
| 3 | 6 |
4.5%
|
|
| 4 | 8 |
6%
|
|
| 5 | 13 |
9.8%
|
|
| 6 | 18 |
13.5%
|
|
| 7 | 31 |
23.3%
|
|
| 8 | 27 |
20.3%
|
|
| 9 | 16 |
12%
|
|
| 10 | Very effective | 9 |
6.8%
|
| 11 | Don't know | 87 | |
| Sysmiss | 33 |