| Value | Category | Cases | |
|---|---|---|---|
| 1 | Almost everyday | 1 | 
                                                                 
                                    
                                    50%
                                 
                                                             | 
                                                        
                    
| 2 | More than once a week | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 3 | About once a week | 1 | 
                                                                 
                                    
                                    50%
                                 
                                                             | 
                                                        
                    
| 4 | Less than once a week but at least once a month | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 5 | Less than once a month | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 9087 |