| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 |
1.7%
|
| 2 | 3 |
1.7%
|
|
| 3 | 6 |
3.4%
|
|
| 4 | 7 |
4%
|
|
| 5 | 17 |
9.6%
|
|
| 6 | 9 |
5.1%
|
|
| 7 | 29 |
16.4%
|
|
| 8 | 29 |
16.4%
|
|
| 9 | 22 |
12.4%
|
|
| 10 | Very effective | 18 |
10.2%
|
| 11 | Don't know | 0 |
0%
|
| NA | 34 |
19.2%
|