| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Not at all effective | 64 |
2.7%
|
| 1 | Not very effective | 296 |
12.4%
|
| 2 | Somewhat effective | 1017 |
42.6%
|
| 3 | Very effective | 924 |
38.7%
|
| 9 | Don't know | 89 |
3.7%
|
| 98 | Refused | 0 |
0%
|