| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 17 |
6.6%
|
| 2 | 20 |
7.8%
|
|
| 3 | 19 |
7.4%
|
|
| 4 | 36 |
14%
|
|
| 5 | 57 |
22.2%
|
|
| 6 | 38 |
14.8%
|
|
| 7 | 22 |
8.6%
|
|
| 8 | 31 |
12.1%
|
|
| 9 | 9 |
3.5%
|
|
| 10 | Very effective | 8 |
3.1%
|
| 11 | Don't know | 49 |