| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very Effective | 1997 |
55.7%
|
| 2 | Moderately effective | 498 |
13.9%
|
| 3 | Rarely effective | 359 |
10%
|
| 4 | Not at all effective | 730 |
20.4%
|
| Sysmiss | 134 |