| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 2647 |
14%
|
| 2 | Effective | 7082 |
37.5%
|
| 3 | Moderately effective | 4943 |
26.2%
|
| 4 | Poorly effective | 2792 |
14.8%
|
| 5 | Not effective at all | 1435 |
7.6%
|