| Value | Category | Cases | |
|---|---|---|---|
| 1 | High | 32 | 
                                                                 
                                    
                                    11.4%
                                 
                                                             | 
                                                        
                    
| 2 | Average | 54 | 
                                                                 
                                    
                                    19.3%
                                 
                                                             | 
                                                        
                    
| 3 | Low | 130 | 
                                                                 
                                    
                                    46.4%
                                 
                                                             | 
                                                        
                    
| 4 | None | 64 | 
                                                                 
                                    
                                    22.9%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 10 |