| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
0.9%
|
| 2 | 0 |
0%
|
|
| 3 | 6 |
1.8%
|
|
| 4 | 3 |
0.9%
|
|
| 5 | 20 |
6%
|
|
| 6 | 23 |
6.9%
|
|
| 7 | 44 |
13.1%
|
|
| 8 | 63 |
18.8%
|
|
| 9 | 27 |
8.1%
|
|
| 10 | Very effective | 13 |
3.9%
|
| 11 | Don't know | 133 |
39.7%
|
| Sysmiss | 5 |