| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 920 | 
                                    
                                    76.7%
                                 | 
| 1 | Sometimes | 157 | 
                                    
                                    13.1%
                                 | 
| 2 | Often | 59 | 
                                    
                                    4.9%
                                 | 
| 3 | Always | 48 | 
                                    
                                    4%
                                 | 
| 7 | Not applicable | 2 | 
                                    
                                    0.2%
                                 | 
| 8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 9 | Don’t know | 14 | 
                                    
                                    1.2%
                                 |