| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 1775 | 
                                                                 
                                    
                                    29.6%
                                 
                                                             | 
                                                        
                    
| 2 | Once or twice in the past month | 1019 | 
                                                                 
                                    
                                    17%
                                 
                                                             | 
                                                        
                    
| 3 | About once a week | 754 | 
                                                                 
                                    
                                    12.6%
                                 
                                                             | 
                                                        
                    
| 4 | 2 or 3 times a week | 851 | 
                                                                 
                                    
                                    14.2%
                                 
                                                             | 
                                                        
                    
| 5 | Almost everyday | 955 | 
                                                                 
                                    
                                    15.9%
                                 
                                                             | 
                                                        
                    
| 6 | Everyday | 636 | 
                                                                 
                                    
                                    10.6%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 1171 |