| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 1 |
0.6%
|
| 2 | 3 |
1.7%
|
|
| 3 | 3 |
1.7%
|
|
| 4 | 4 |
2.3%
|
|
| 5 | 5 |
2.8%
|
|
| 6 | 5 |
2.8%
|
|
| 7 | 16 |
9%
|
|
| 8 | 9 |
5.1%
|
|
| 9 | 3 |
1.7%
|
|
| 10 | Very effective | 9 |
5.1%
|
| 11 | Don't know | 0 |
0%
|
| NA | 119 |
67.2%
|