| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Very effective | 1027 |
85.6%
|
| 2 | Somewhat effective | 117 |
9.8%
|
| 3 | Not very effective | 13 |
1.1%
|
| 4 | Not effective | 8 |
0.7%
|
| 9 | Do not know | 35 |
2.9%
|