| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 658 |
14.2%
|
| 2 | Fairly effective | 1281 |
27.6%
|
| 3 | Fairly ineffective | 1155 |
24.9%
|
| 4 | Very ineffective | 1549 |
33.4%
|
| Sysmiss | 4832 |