| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 9 |
3%
|
| 2 | 8 |
2.7%
|
|
| 3 | 18 |
6%
|
|
| 4 | 18 |
6%
|
|
| 5 | 28 |
9.3%
|
|
| 6 | 31 |
10.3%
|
|
| 7 | 29 |
9.7%
|
|
| 8 | 17 |
5.7%
|
|
| 9 | 10 |
3.3%
|
|
| 10 | Very effective | 3 |
1%
|
| 11 | Don't know | 0 |
0%
|
| NA | 129 |
43%
|