| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 1 | Very easy | 33 | 
                                    
                                    2.8%
                                 | 
| 2 | Easy | 260 | 
                                    
                                    21.7%
                                 | 
| 3 | Difficult | 146 | 
                                    
                                    12.2%
                                 | 
| 4 | Very Difficult | 63 | 
                                    
                                    5.3%
                                 | 
| 7 | No contact | 698 | 
                                    
                                    58.2%
                                 | 
| 8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 9 | Don't know | 0 | 
                                    
                                    0%
                                 |