| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 525 |
11.3%
|
| 2 | Fairly effective | 1619 |
34.8%
|
| 3 | Fairly ineffective | 920 |
19.8%
|
| 4 | Very ineffective | 1589 |
34.2%
|
| Sysmiss | 4822 |