| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 72 | 
                                                                 
                                    
                                    3.7%
                                 
                                                             | 
                                                        
                    
| 2 | Mild | 286 | 
                                                                 
                                    
                                    14.7%
                                 
                                                             | 
                                                        
                    
| 3 | Moderate | 482 | 
                                                                 
                                    
                                    24.7%
                                 
                                                             | 
                                                        
                    
| 4 | Severe | 838 | 
                                                                 
                                    
                                    42.9%
                                 
                                                             | 
                                                        
                    
| 5 | Extreme | 274 | 
                                                                 
                                    
                                    14%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 1986 |