| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 348 |
13.7%
|
| 2 | Fairly effective | 949 |
37.3%
|
| 3 | Fairly ineffective | 448 |
17.6%
|
| 4 | Very ineffective | 802 |
31.5%
|
| Sysmiss | 1003 |