| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 13 |
5.4%
|
| 2 | 20 |
8.3%
|
|
| 3 | 20 |
8.3%
|
|
| 4 | 31 |
12.9%
|
|
| 5 | 38 |
15.8%
|
|
| 6 | 36 |
14.9%
|
|
| 7 | 34 |
14.1%
|
|
| 8 | 31 |
12.9%
|
|
| 9 | 11 |
4.6%
|
|
| 10 | Very effective | 7 |
2.9%
|
| 11 | Don't know | 65 |