| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 1316 |
33.4%
|
| 2 | Fairly effective | 1470 |
37.3%
|
| 3 | Fairly ineffective | 597 |
15.1%
|
| 4 | Very ineffective | 559 |
14.2%
|
| Sysmiss | 5533 |