| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 12 | 
                                                                 
                                    
                                    4.5%
                                 
                                                             | 
                                                        
                    
| 2 | 7 | 
                                                                 
                                    
                                    2.6%
                                 
                                                             | 
                                                        
                    |
| 3 | 7 | 
                                                                 
                                    
                                    2.6%
                                 
                                                             | 
                                                        
                    |
| 4 | 9 | 
                                                                 
                                    
                                    3.4%
                                 
                                                             | 
                                                        
                    |
| 5 | 19 | 
                                                                 
                                    
                                    7.1%
                                 
                                                             | 
                                                        
                    |
| 6 | 16 | 
                                                                 
                                    
                                    6%
                                 
                                                             | 
                                                        
                    |
| 7 | 20 | 
                                                                 
                                    
                                    7.5%
                                 
                                                             | 
                                                        
                    |
| 8 | 23 | 
                                                                 
                                    
                                    8.6%
                                 
                                                             | 
                                                        
                    |
| 9 | 16 | 
                                                                 
                                    
                                    6%
                                 
                                                             | 
                                                        
                    |
| 10 | Very effective | 18 | 
                                                                 
                                    
                                    6.7%
                                 
                                                             | 
                                                        
                    
| 11 | 121 | 
                                                                 
                                    
                                    45.1%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 39 |