| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 972 |
9.9%
|
| 2 | Effective | 2268 |
23%
|
| 3 | Moderately effective | 1826 |
18.5%
|
| 4 | Poorly effective | 1057 |
10.7%
|
| 5 | Not effective at all | 3739 |
37.9%
|