| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 656 |
38.2%
|
| 2 | Effective | 201 |
11.7%
|
| 3 | Moderately effective | 26 |
1.5%
|
| 4 | Slightly effective | 3 |
0.2%
|
| 5 | Not effective | 2 |
0.1%
|
| 95 | Missing | 23 |
1.3%
|
| 99 | NA | 807 |
47%
|
| Sysmiss | 1257 |