| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 5 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    
| 2 | Mild | 8 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    
| 3 | Moderate | 61 | 
                                                                 
                                    
                                    6.2%
                                 
                                                             | 
                                                        
                    
| 4 | Severe | 499 | 
                                                                 
                                    
                                    51%
                                 
                                                             | 
                                                        
                    
| 5 | Extreme | 406 | 
                                                                 
                                    
                                    41.5%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 2959 |