| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 1586 |
8.2%
|
| 2 | Effective | 5483 |
28.4%
|
| 3 | Moderate | 5207 |
27%
|
| 4 | Not effective | 2853 |
14.8%
|
| 5 | Don't know | 4174 |
21.6%
|