Value | Category | Cases | |
---|---|---|---|
-1 | Missing | 2 |
0.1%
|
0 | Not at all effective | 68 |
2.8%
|
1 | Not very effective | 332 |
13.8%
|
2 | Somewhat effective | 882 |
36.8%
|
3 | Very effective | 981 |
40.9%
|
9 | Don't know | 134 |
5.6%
|
998 | Refused | 0 |
0%
|