| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very effective | 213 |
8.9%
|
| 2 | Somewhat effective | 808 |
33.7%
|
| 3 | Not very effective | 810 |
33.8%
|
| 4 | Not at all effective | 505 |
21%
|
| 9 | Don't know | 64 |
2.7%
|
| 98 | Refused | 0 |
0%
|