| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 1432 |
7.4%
|
| 2 | Effective | 5331 |
27.6%
|
| 3 | Moderate | 6157 |
31.9%
|
| 4 | Not effective | 2887 |
14.9%
|
| 5 | Don't know | 3507 |
18.2%
|