| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 663 |
31.9%
|
| 2 | Fairly effective | 813 |
39.1%
|
| 3 | Fairly ineffective | 311 |
15%
|
| 4 | Very ineffective | 292 |
14%
|
| Sysmiss | 1471 |