| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 1 |
0.7%
|
|
| 3 | 4 |
2.7%
|
|
| 4 | 4 |
2.7%
|
|
| 5 | 20 |
13.4%
|
|
| 6 | 21 |
14.1%
|
|
| 7 | 25 |
16.8%
|
|
| 8 | 23 |
15.4%
|
|
| 9 | 13 |
8.7%
|
|
| 10 | Very effective | 8 |
5.4%
|
| 11 | Don't know | 30 |
20.1%
|