| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
1%
|
|
| 4 | 5 |
5%
|
|
| 5 | 4 |
4%
|
|
| 6 | 8 |
8%
|
|
| 7 | 21 |
21%
|
|
| 8 | 29 |
29%
|
|
| 9 | 23 |
23%
|
|
| 10 | Very effective | 9 |
9%
|
| 11 | Don't know | 38 |