| Value | Category | Cases | |
|---|---|---|---|
| -99 | Refuse to answer | 0 |
0%
|
| -88 | No answer | 0 |
0%
|
| -77 | Not applicable | 0 |
0%
|
| -66 | Don't know | 0 |
0%
|
| 1 | Very effective | 135 |
52.3%
|
| 2 | Effective | 117 |
45.3%
|
| 3 | Ineffective | 6 |
2.3%
|
| 4 | Very ineffective | 0 |
0%
|