| Value | Category | Cases | |
|---|---|---|---|
| 1 | Involved, Important | 3062 | 
                                                                 
                                    
                                    25%
                                 
                                                             | 
                                                        
                    
| 2 | Involved, Not Important | 960 | 
                                                                 
                                    
                                    7.8%
                                 
                                                             | 
                                                        
                    
| 3 | Not Involved | 5138 | 
                                                                 
                                    
                                    42%
                                 
                                                             | 
                                                        
                    
| 4 | Method Not Applicable | 3080 | 
                                                                 
                                    
                                    25.2%
                                 
                                                             |