| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 4 |
1.3%
|
| 2 | 4 |
1.3%
|
|
| 3 | 2 |
0.7%
|
|
| 4 | 9 |
3%
|
|
| 5 | 15 |
5%
|
|
| 6 | 7 |
2.3%
|
|
| 7 | 17 |
5.7%
|
|
| 8 | 27 |
9%
|
|
| 9 | 7 |
2.3%
|
|
| 10 | Very effective | 4 |
1.3%
|
| 11 | Don't know | 0 |
0%
|
| NA | 204 |
68%
|