| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 989 |
20.7%
|
| 2 | Fairly effective | 1725 |
36%
|
| 3 | Fairly ineffective | 934 |
19.5%
|
| 4 | Very ineffective | 1138 |
23.8%
|
| Sysmiss | 4689 |