| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
0.9%
|
| 3 | 2 |
0.5%
|
|
| 4 | 8 |
1.8%
|
|
| 5 | 17 |
3.8%
|
|
| 6 | 22 |
5%
|
|
| 7 | 60 |
13.5%
|
|
| 8 | 67 |
15.1%
|
|
| 9 | 25 |
5.6%
|
|
| 10 | Very effective | 3 |
0.7%
|
| 11 | Don't know | 0 |
0%
|
| NA | 235 |
53%
|