| Value | Category | Cases | |
|---|---|---|---|
| 1 | NO DIFFICULTY | 740 | 
                                    
                                    84.6%
                                 | 
| 2 | SOME DIFFICULTY | 108 | 
                                    
                                    12.3%
                                 | 
| 3 | A LOT OF DIFFICULTY | 21 | 
                                    
                                    2.4%
                                 | 
| 4 | IT IS IMPOSSIBLE TO CARRY OUT THE ACTIVITY | 6 | 
                                    
                                    0.7%
                                 |