| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 1 | Très facile | 141 | 
                                    
                                    11.8%
                                 | 
| 2 | Facile | 326 | 
                                    
                                    27.2%
                                 | 
| 3 | Difficile | 257 | 
                                    
                                    21.4%
                                 | 
| 4 | Très difficile | 145 | 
                                    
                                    12.1%
                                 | 
| 7 | Aucun contact | 331 | 
                                    
                                    27.6%
                                 | 
| 8 | Refuse | 0 | 
                                    
                                    0%
                                 | 
| 9 | Ne sais pas | 0 | 
                                    
                                    0%
                                 |