| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 1117 |
23.4%
|
| 2 | Fairly effective | 1249 |
26.2%
|
| 3 | Fairly ineffective | 922 |
19.3%
|
| 4 | Very ineffective | 1484 |
31.1%
|
| Sysmiss | 4703 |