| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 96 | 
                                                                 
                                    
                                    4.9%
                                 
                                                             | 
                                                        
                    
| 2 | Mild | 297 | 
                                                                 
                                    
                                    15.2%
                                 
                                                             | 
                                                        
                    
| 3 | Moderate | 599 | 
                                                                 
                                    
                                    30.6%
                                 
                                                             | 
                                                        
                    
| 4 | Severe | 845 | 
                                                                 
                                    
                                    43.2%
                                 
                                                             | 
                                                        
                    
| 5 | Extreme | 119 | 
                                                                 
                                    
                                    6.1%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 1982 |