| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 104 | 
                                                                 
                                    
                                    5.3%
                                 
                                                             | 
                                                        
                    
| 2 | Mild | 199 | 
                                                                 
                                    
                                    10.2%
                                 
                                                             | 
                                                        
                    
| 3 | Moderate | 477 | 
                                                                 
                                    
                                    24.4%
                                 
                                                             | 
                                                        
                    
| 4 | Severe | 759 | 
                                                                 
                                    
                                    38.8%
                                 
                                                             | 
                                                        
                    
| 5 | Extreme | 417 | 
                                                                 
                                    
                                    21.3%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 1982 |