| Value | Category | Cases | |
|---|---|---|---|
| 1 | Highly effective | 1782 |
9.5%
|
| 2 | Effective | 2599 |
13.9%
|
| 3 | Moderately effective | 4304 |
23.1%
|
| 4 | Not effective | 2919 |
15.6%
|
| 5 | Don't know | 7063 |
37.8%
|