| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 1446 |
28.2%
|
| 2 | Fairly effective | 2074 |
40.4%
|
| 3 | Fairly ineffective | 846 |
16.5%
|
| 4 | Very ineffective | 762 |
14.9%
|
| Sysmiss | 4347 |