| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.7%
|
| 2 | 3 |
1%
|
|
| 3 | 2 |
0.7%
|
|
| 4 | 6 |
2%
|
|
| 5 | 14 |
4.7%
|
|
| 6 | 17 |
5.7%
|
|
| 7 | 21 |
7%
|
|
| 8 | 26 |
8.7%
|
|
| 9 | 20 |
6.7%
|
|
| 10 | Very effective | 8 |
2.7%
|
| 11 | Don't know | 0 |
0%
|
| NA | 178 |
59.3%
|