| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Not at all effective | 163 |
13.6%
|
| 1 | Not very effective | 396 |
33%
|
| 2 | Somewhat effective | 410 |
34.2%
|
| 3 | Very effective | 154 |
12.8%
|
| 9 | Don’t know | 77 |
6.4%
|
| 98 | Refused | 0 |
0%
|