| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Not at all effective | 322 |
26.8%
|
| 1 | Not very effective | 127 |
10.6%
|
| 2 | Somewhat effective | 183 |
15.3%
|
| 3 | Very effective | 513 |
42.8%
|
| 9 | Don't Know | 48 |
4%
|
| 98 | Refused | 7 |
0.6%
|