| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 8 |
2.7%
|
| 2 | 4 |
1.3%
|
|
| 3 | 7 |
2.3%
|
|
| 4 | 11 |
3.7%
|
|
| 5 | 21 |
7%
|
|
| 6 | 16 |
5.3%
|
|
| 7 | 16 |
5.3%
|
|
| 8 | 24 |
8%
|
|
| 9 | 12 |
4%
|
|
| 10 | Very effective | 6 |
2%
|
| 11 | Don't know | 0 |
0%
|
| NA | 175 |
58.3%
|