| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective | 24 | 
                                    
                                    31.6%
                                 | 
| 2 | Somewhat effective | 11 | 
                                    
                                    14.5%
                                 | 
| 3 | Fully effective | 41 | 
                                    
                                    53.9%
                                 | 
| Sysmiss | 844 |