| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 552 | 
                                    
                                    23%
                                 | 
| 1 | Sometimes | 1047 | 
                                    
                                    43.6%
                                 | 
| 2 | Always | 697 | 
                                    
                                    29%
                                 | 
| 8 | Refused | 1 | 
                                    
                                    0%
                                 | 
| 9 | Don’t know | 103 | 
                                    
                                    4.3%
                                 |