| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 112 | 
                                                                 
                                    
                                    5.7%
                                 
                                                             | 
                                                        
                    
| 2 | Mild | 301 | 
                                                                 
                                    
                                    15.4%
                                 
                                                             | 
                                                        
                    
| 3 | Moderate | 627 | 
                                                                 
                                    
                                    32%
                                 
                                                             | 
                                                        
                    
| 4 | Severe | 811 | 
                                                                 
                                    
                                    41.4%
                                 
                                                             | 
                                                        
                    
| 5 | Extreme | 109 | 
                                                                 
                                    
                                    5.6%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 1978 |