| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 592 |
6.9%
|
| 2 | Effective | 2093 |
24.4%
|
| 3 | Moderately effective | 2551 |
29.7%
|
| 4 | Poorly effective | 2183 |
25.5%
|
| 5 | Not effective at all | 1156 |
13.5%
|