| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every day | 64 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    
| 2 | More than twice a week | 113 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    
| 3 | Once or twice a week | 288 | 
                                                                 
                                    
                                    2.9%
                                 
                                                             | 
                                                        
                    
| 4 | A few times a month | 818 | 
                                                                 
                                    
                                    8.3%
                                 
                                                             | 
                                                        
                    
| 5 | Rarely | 2155 | 
                                                                 
                                    
                                    21.9%
                                 
                                                             | 
                                                        
                    
| 6 | Never | 6419 | 
                                                                 
                                    
                                    65.1%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 3 |