| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 0 | Never | 1917 | 
                                                                 
                                    
                                    79.9%
                                 
                                                             | 
                                                        
                    
| 1 | Only sometimes | 340 | 
                                                                 
                                    
                                    14.2%
                                 
                                                             | 
                                                        
                    
| 2 | Often | 99 | 
                                                                 
                                    
                                    4.1%
                                 
                                                             | 
                                                        
                    
| 3 | Always | 16 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    
| 9 | Don't know | 28 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    
| 998 | Refused | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             |