| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very difficult to verify | 5 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    
| 2 | Somewhat difficult to verify | 28 | 
                                                                 
                                    
                                    4.3%
                                 
                                                             | 
                                                        
                    
| 3 | Neither difficult nor easy | 41 | 
                                                                 
                                    
                                    6.3%
                                 
                                                             | 
                                                        
                    
| 4 | Somewhat easy to verify | 259 | 
                                                                 
                                    
                                    40%
                                 
                                                             | 
                                                        
                    
| 5 | Very easy to verify | 315 | 
                                                                 
                                    
                                    48.6%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 105 |