| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 52 | 
                                                                 
                                    
                                    5.3%
                                 
                                                             | 
                                                        
                    
| 2 | Mild | 320 | 
                                                                 
                                    
                                    32.5%
                                 
                                                             | 
                                                        
                    
| 3 | Moderate | 443 | 
                                                                 
                                    
                                    45%
                                 
                                                             | 
                                                        
                    
| 4 | Severe | 136 | 
                                                                 
                                    
                                    13.8%
                                 
                                                             | 
                                                        
                    
| 5 | Extreme | 33 | 
                                                                 
                                    
                                    3.4%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 2954 |