| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 0 | Not at all effective | 273 |
22.8%
|
| 1 | Not very effective | 343 |
28.6%
|
| 2 | Somewhat effective | 343 |
28.6%
|
| 3 | Very effective | 142 |
11.8%
|
| 9 | Do not know | 99 |
8.3%
|
| 98 | Refused | 0 |
0%
|