| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 2 |
0.9%
|
|
| 3 | 6 |
2.7%
|
|
| 4 | 1 |
0.5%
|
|
| 5 | 20 |
9%
|
|
| 6 | 10 |
4.5%
|
|
| 7 | 29 |
13.1%
|
|
| 8 | 40 |
18.1%
|
|
| 9 | 25 |
11.3%
|
|
| 10 | Very effective | 59 |
26.7%
|
| 11 | Don't know | 29 |
13.1%
|