| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.2%
|
| 2 | 1 |
0.2%
|
|
| 3 | 5 |
1.1%
|
|
| 4 | 9 |
2%
|
|
| 5 | 23 |
5.2%
|
|
| 6 | 30 |
6.8%
|
|
| 7 | 59 |
13.3%
|
|
| 8 | 75 |
16.9%
|
|
| 9 | 41 |
9.3%
|
|
| 10 | Very effective | 8 |
1.8%
|
| 11 | Don't know | 0 |
0%
|
| NA | 191 |
43.1%
|