| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 2 | 2 | 
                                                                 
                                    
                                    1.4%
                                 
                                                             | 
                                                        
                    |
| 3 | 3 | 
                                                                 
                                    
                                    2.2%
                                 
                                                             | 
                                                        
                    |
| 4 | 9 | 
                                                                 
                                    
                                    6.5%
                                 
                                                             | 
                                                        
                    |
| 5 | 14 | 
                                                                 
                                    
                                    10.1%
                                 
                                                             | 
                                                        
                    |
| 6 | 15 | 
                                                                 
                                    
                                    10.8%
                                 
                                                             | 
                                                        
                    |
| 7 | 25 | 
                                                                 
                                    
                                    18%
                                 
                                                             | 
                                                        
                    |
| 8 | 43 | 
                                                                 
                                    
                                    30.9%
                                 
                                                             | 
                                                        
                    |
| 9 | 20 | 
                                                                 
                                    
                                    14.4%
                                 
                                                             | 
                                                        
                    |
| 10 | Very effective | 8 | 
                                                                 
                                    
                                    5.8%
                                 
                                                             | 
                                                        
                    
| 11 | Don't know | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 236 |