| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 427 | 
                                    
                                    17.8%
                                 | 
| 1 | Once or twice | 30 | 
                                    
                                    1.3%
                                 | 
| 2 | Several times | 24 | 
                                    
                                    1%
                                 | 
| 3 | Many times | 11 | 
                                    
                                    0.5%
                                 | 
| 7 | Not applicable (no disability) | 1904 | 
                                    
                                    79.3%
                                 | 
| 8 | Refused | 1 | 
                                    
                                    0%
                                 | 
| 9 | Don't know | 3 | 
                                    
                                    0.1%
                                 |