| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 3 | 1 |
1.4%
|
|
| 4 | 6 |
8.5%
|
|
| 5 | 12 |
16.9%
|
|
| 6 | 10 |
14.1%
|
|
| 7 | 22 |
31%
|
|
| 8 | 14 |
19.7%
|
|
| 9 | 5 |
7%
|
|
| 10 | Very effective | 1 |
1.4%
|
| 11 | Don't know | 33 |