| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Not at all effective | 161 |
13.4%
|
| 1 | Not very effective | 517 |
43.1%
|
| 2 | Somewhat effective | 338 |
28.2%
|
| 3 | Very effective | 79 |
6.6%
|
| 9 | Don't know | 104 |
8.7%
|
| 98 | Refused | 0 |
0%
|