| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very effective | 768 |
16.2%
|
| 2 | Fairly effective | 2020 |
42.5%
|
| 3 | Fairly ineffective | 1019 |
21.4%
|
| 4 | Very ineffective | 948 |
19.9%
|
| Sysmiss | 4720 |