| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 6268 |
32.3%
|
| 2 | Effective | 6427 |
33.1%
|
| 3 | Moderate effecti | 3298 |
17%
|
| 4 | Not effective | 1205 |
6.2%
|
| 5 | Don't know | 2197 |
11.3%
|