| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 6 |
2%
|
| 2 | 1 |
0.3%
|
|
| 3 | 2 |
0.7%
|
|
| 4 | 7 |
2.3%
|
|
| 5 | 15 |
5%
|
|
| 6 | 20 |
6.7%
|
|
| 7 | 27 |
9%
|
|
| 8 | 32 |
10.7%
|
|
| 9 | 26 |
8.7%
|
|
| 10 | Very effective | 5 |
1.7%
|
| 11 | Don't know | 0 |
0%
|
| NA | 159 |
53%
|