| Value | Category | Cases | |
|---|---|---|---|
| 1 | Average | 14 | 
                                                                 
                                    
                                    3.2%
                                 
                                                             | 
                                                        
                    
| 2 | Useful | 303 | 
                                                                 
                                    
                                    69.3%
                                 
                                                             | 
                                                        
                    
| 3 | Very Useful | 120 | 
                                                                 
                                    
                                    27.5%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 1849 |