| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0%
|
| 0 | Not at all effective | 342 |
14.3%
|
| 1 | Not very effective | 712 |
29.7%
|
| 2 | Somewhat effective | 792 |
33%
|
| 3 | Very effective | 207 |
8.6%
|
| 9 | Don't know | 346 |
14.4%
|
| 98 | Refused | 0 |
0%
|