| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 11 | 
                                                                 
                                    
                                    4%
                                 
                                                             | 
                                                        
                    
| 2 | 12 | 
                                                                 
                                    
                                    4.3%
                                 
                                                             | 
                                                        
                    |
| 3 | 11 | 
                                                                 
                                    
                                    4%
                                 
                                                             | 
                                                        
                    |
| 4 | 11 | 
                                                                 
                                    
                                    4%
                                 
                                                             | 
                                                        
                    |
| 5 | 18 | 
                                                                 
                                    
                                    6.5%
                                 
                                                             | 
                                                        
                    |
| 6 | 18 | 
                                                                 
                                    
                                    6.5%
                                 
                                                             | 
                                                        
                    |
| 7 | 24 | 
                                                                 
                                    
                                    8.6%
                                 
                                                             | 
                                                        
                    |
| 8 | 25 | 
                                                                 
                                    
                                    9%
                                 
                                                             | 
                                                        
                    |
| 9 | 17 | 
                                                                 
                                    
                                    6.1%
                                 
                                                             | 
                                                        
                    |
| 10 | Very effective | 23 | 
                                                                 
                                    
                                    8.3%
                                 
                                                             | 
                                                        
                    
| 11 | 108 | 
                                                                 
                                    
                                    38.8%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 29 |