| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 235 | 
                                                                 
                                    
                                    24%
                                 
                                                             | 
                                                        
                    
| 2 | Mild | 344 | 
                                                                 
                                    
                                    35.1%
                                 
                                                             | 
                                                        
                    
| 3 | Moderate | 322 | 
                                                                 
                                    
                                    32.9%
                                 
                                                             | 
                                                        
                    
| 4 | Severe | 70 | 
                                                                 
                                    
                                    7.2%
                                 
                                                             | 
                                                        
                    
| 5 | Extreme | 8 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 2959 |