Value | Category | Cases | |
---|---|---|---|
-1 | Missing | 1 |
0.1%
|
0 | Not at all effective | 55 |
4.6%
|
1 | Not very effective | 214 |
17.8%
|
2 | Somewhat effective | 453 |
37.8%
|
3 | Very effective | 242 |
20.2%
|
9 | Don't know | 235 |
19.6%
|
998 | Refused | 0 |
0%
|