| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.2%
|
| 2 | 4 |
0.9%
|
|
| 3 | 9 |
2%
|
|
| 4 | 4 |
0.9%
|
|
| 5 | 17 |
3.8%
|
|
| 6 | 37 |
8.4%
|
|
| 7 | 62 |
14%
|
|
| 8 | 91 |
20.5%
|
|
| 9 | 49 |
11.1%
|
|
| 10 | Very effective | 15 |
3.4%
|
| 11 | Don't know | 0 |
0%
|
| NA | 154 |
34.8%
|