| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very effective | 540 |
33.8%
|
| 2 | Somewhat effective | 632 |
39.5%
|
| 3 | Not very effective | 323 |
20.2%
|
| 4 | Not at all effective | 97 |
6.1%
|
| 8 | Refused | 1 |
0.1%
|
| 9 | Don’t know | 7 |
0.4%
|