| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 5 |
1.7%
|
| 2 | 3 |
1%
|
|
| 3 | 3 |
1%
|
|
| 4 | 8 |
2.7%
|
|
| 5 | 15 |
5%
|
|
| 6 | 13 |
4.3%
|
|
| 7 | 15 |
5%
|
|
| 8 | 18 |
6%
|
|
| 9 | 11 |
3.7%
|
|
| 10 | Very effective | 1 |
0.3%
|
| 11 | Don't know | 0 |
0%
|
| NA | 208 |
69.3%
|