| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 3067 | 
                                                                 
                                    
                                    58.7%
                                 
                                                             | 
                                                        
                    
| 2 | SOME DIFFICULTY | 605 | 
                                                                 
                                    
                                    11.6%
                                 
                                                             | 
                                                        
                    
| 3 | A LOT OF DIFFICULTY | 75 | 
                                                                 
                                    
                                    1.4%
                                 
                                                             | 
                                                        
                    
| 4 | CANNOT REMEMBER/CONCENTRATE AT ALL | 1 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 9 | NO RESPONSE | 2 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 1476 | 
                                                                 
                                    
                                    28.2%
                                 
                                                             |