| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 3 |
1.8%
|
|
| 3 | 7 |
4.1%
|
|
| 4 | 10 |
5.9%
|
|
| 5 | 27 |
16%
|
|
| 6 | 33 |
19.5%
|
|
| 7 | 37 |
21.9%
|
|
| 8 | 35 |
20.7%
|
|
| 9 | 14 |
8.3%
|
|
| 10 | Very effective | 3 |
1.8%
|
| 11 | Don't know | 172 | |
| Sysmiss | 19 |