| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 504 |
34.5%
|
| 2 | Effective | 318 |
21.8%
|
| 3 | Not effective | 4 |
0.3%
|
| 5 | Missing | 167 |
11.4%
|
| 9 | NA | 468 |
32%
|
| Sysmiss | 291 |