| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 2 |
0.5%
|
| 2 | 4 |
0.9%
|
|
| 3 | 2 |
0.5%
|
|
| 4 | 10 |
2.3%
|
|
| 5 | 24 |
5.4%
|
|
| 6 | 24 |
5.4%
|
|
| 7 | 64 |
14.4%
|
|
| 8 | 47 |
10.6%
|
|
| 9 | 21 |
4.7%
|
|
| 10 | Very effective | 4 |
0.9%
|
| 11 | Don't know | 0 |
0%
|
| NA | 241 |
54.4%
|