| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Very effective | 485 |
40.4%
|
| 1 | Effective | 567 |
47.3%
|
| 2 | Not very effective | 95 |
7.9%
|
| 3 | Not at all effective | 38 |
3.2%
|
| 9 | Don't Know | 15 |
1.3%
|
| 98 | Refused | 0 |
0%
|