| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 2077 |
10.7%
|
| 2 | Effective | 6018 |
31.1%
|
| 3 | Moderate | 4986 |
25.8%
|
| 4 | Not effective | 2342 |
12.1%
|
| 5 | Don't know | 3905 |
20.2%
|