| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
1.5%
|
| 2 | 0 |
0%
|
|
| 3 | 2 |
1.5%
|
|
| 4 | 5 |
3.7%
|
|
| 5 | 18 |
13.4%
|
|
| 6 | 18 |
13.4%
|
|
| 7 | 27 |
20.1%
|
|
| 8 | 20 |
14.9%
|
|
| 9 | 12 |
9%
|
|
| 10 | Very effective | 14 |
10.4%
|
| 11 | Don't know | 16 |
11.9%
|