| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.7%
|
| 2 | 2 |
0.7%
|
|
| 3 | 8 |
2.7%
|
|
| 4 | 11 |
3.7%
|
|
| 5 | 15 |
5%
|
|
| 6 | 10 |
3.3%
|
|
| 7 | 19 |
6.3%
|
|
| 8 | 26 |
8.7%
|
|
| 9 | 21 |
7%
|
|
| 10 | Very effective | 11 |
3.7%
|
| 11 | Don't know | 0 |
0%
|
| NA | 172 |
57.3%
|