| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 6 | 
                                                                 
                                    
                                    7%
                                 
                                                             | 
                                                        
                    
| 2 | 5-6 days per week | 6 | 
                                                                 
                                    
                                    7%
                                 
                                                             | 
                                                        
                    
| 3 | 3-4 days per week | 3 | 
                                                                 
                                    
                                    3.5%
                                 
                                                             | 
                                                        
                    
| 4 | 1-2 days per week | 23 | 
                                                                 
                                    
                                    26.7%
                                 
                                                             | 
                                                        
                    
| 5 | 1-3 days per month | 17 | 
                                                                 
                                    
                                    19.8%
                                 
                                                             | 
                                                        
                    
| 6 | Less than once a month | 31 | 
                                                                 
                                    
                                    36%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 5343 |