| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 |
0%
|
| 2 | 0 |
0%
|
|
| 3 | 6 |
3%
|
|
| 4 | 5 |
2.5%
|
|
| 5 | 15 |
7.4%
|
|
| 6 | 23 |
11.3%
|
|
| 7 | 36 |
17.7%
|
|
| 8 | 49 |
24.1%
|
|
| 9 | 17 |
8.4%
|
|
| 10 | Very effective | 13 |
6.4%
|
| 11 | Don't know | 39 |
19.2%
|