| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 696 |
40.5%
|
| 2 | Effective | 147 |
8.6%
|
| 3 | Moderately effective | 19 |
1.1%
|
| 4 | Slightly effective | 2 |
0.1%
|
| 5 | Not effective | 1 |
0.1%
|
| 95 | Missing | 46 |
2.7%
|
| 99 | NA | 807 |
47%
|
| Sysmiss | 1257 |