| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Very effective | 463 |
38.6%
|
| 1 | Effective | 527 |
43.9%
|
| 2 | Not very effective | 114 |
9.5%
|
| 3 | Not at all effective | 54 |
4.5%
|
| 9 | Don't Know | 42 |
3.5%
|
| 98 | Refused | 0 |
0%
|