| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
3.6%
|
| 2 | 9 |
4%
|
|
| 3 | 22 |
9.9%
|
|
| 4 | 23 |
10.3%
|
|
| 5 | 51 |
22.9%
|
|
| 6 | 38 |
17%
|
|
| 7 | 36 |
16.1%
|
|
| 8 | 20 |
9%
|
|
| 9 | 11 |
4.9%
|
|
| 10 | Very effective | 5 |
2.2%
|
| 11 | Don't know | 83 |