| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Not at all effective | 50 |
2.1%
|
| 2 | Not very effective | 64 |
2.7%
|
| 3 | Fairly effective | 206 |
8.6%
|
| 4 | Very effective | 167 |
7%
|
| 7 | Not Applicable | 1892 |
78.8%
|
| 8 | Refused to answer | 0 |
0%
|
| 9 | Don’t know | 21 |
0.9%
|