| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 27 | 
                                                                 
                                    
                                    13%
                                 
                                                             | 
                                                        
                    
| 2 | 14 | 
                                                                 
                                    
                                    6.7%
                                 
                                                             | 
                                                        
                    |
| 3 | 24 | 
                                                                 
                                    
                                    11.5%
                                 
                                                             | 
                                                        
                    |
| 4 | 17 | 
                                                                 
                                    
                                    8.2%
                                 
                                                             | 
                                                        
                    |
| 5 | 25 | 
                                                                 
                                    
                                    12%
                                 
                                                             | 
                                                        
                    |
| 6 | 26 | 
                                                                 
                                    
                                    12.5%
                                 
                                                             | 
                                                        
                    |
| 7 | 28 | 
                                                                 
                                    
                                    13.5%
                                 
                                                             | 
                                                        
                    |
| 8 | 20 | 
                                                                 
                                    
                                    9.6%
                                 
                                                             | 
                                                        
                    |
| 9 | 8 | 
                                                                 
                                    
                                    3.8%
                                 
                                                             | 
                                                        
                    |
| 10 | Very effective | 19 | 
                                                                 
                                    
                                    9.1%
                                 
                                                             | 
                                                        
                    
| 11 | N/A | 138 | |
| Sysmiss | 84 |