| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 46 | 
                                                                 
                                    
                                    2.4%
                                 
                                                             | 
                                                        
                    
| 2 | Mild | 121 | 
                                                                 
                                    
                                    6.2%
                                 
                                                             | 
                                                        
                    
| 3 | Moderate | 246 | 
                                                                 
                                    
                                    12.6%
                                 
                                                             | 
                                                        
                    
| 4 | Severe | 601 | 
                                                                 
                                    
                                    30.7%
                                 
                                                             | 
                                                        
                    
| 5 | Extreme | 942 | 
                                                                 
                                    
                                    48.2%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 1982 |