| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Very effective | 519 |
43.3%
|
| 1 | Effective | 559 |
46.6%
|
| 2 | Not very effective | 85 |
7.1%
|
| 3 | Not at all effective | 31 |
2.6%
|
| 9 | Don't Know | 6 |
0.5%
|
| 98 | Refused | 0 |
0%
|