| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 113 | 
                                                                 
                                    
                                    14.6%
                                 
                                                             | 
                                                        
                    
| -7 | Does not apply | 333 | 
                                                                 
                                    
                                    43.1%
                                 
                                                             | 
                                                        
                    
| 0 | No impact | 187 | 
                                                                 
                                    
                                    24.2%
                                 
                                                             | 
                                                        
                    
| 1 | Minor impact | 61 | 
                                                                 
                                    
                                    7.9%
                                 
                                                             | 
                                                        
                    
| 2 | Moderate impact | 55 | 
                                                                 
                                    
                                    7.1%
                                 
                                                             | 
                                                        
                    
| 3 | Major impact | 16 | 
                                                                 
                                    
                                    2.1%
                                 
                                                             | 
                                                        
                    
| 4 | Very major impact | 7 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             |