| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 15 |
5.7%
|
| 2 | 19 |
7.3%
|
|
| 3 | 22 |
8.4%
|
|
| 4 | 33 |
12.6%
|
|
| 5 | 78 |
29.8%
|
|
| 6 | 37 |
14.1%
|
|
| 7 | 20 |
7.6%
|
|
| 8 | 24 |
9.2%
|
|
| 9 | 7 |
2.7%
|
|
| 10 | Very effective | 7 |
2.7%
|
| 11 | Don't know | 44 |