| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 27 | 
                                                                 
                                    
                                    1.4%
                                 
                                                             | 
                                                        
                    
| 2 | Mild | 69 | 
                                                                 
                                    
                                    3.5%
                                 
                                                             | 
                                                        
                    
| 3 | Moderate | 302 | 
                                                                 
                                    
                                    15.4%
                                 
                                                             | 
                                                        
                    
| 4 | Severe | 1126 | 
                                                                 
                                    
                                    57.5%
                                 
                                                             | 
                                                        
                    
| 5 | Extreme | 435 | 
                                                                 
                                    
                                    22.2%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 1979 |