| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 236 | 
                                                                 
                                    
                                    6.5%
                                 
                                                             | 
                                                        
                    
| 2 | 5-6 days per week | 102 | 
                                                                 
                                    
                                    2.8%
                                 
                                                             | 
                                                        
                    
| 3 | 3-4 days per week | 232 | 
                                                                 
                                    
                                    6.4%
                                 
                                                             | 
                                                        
                    
| 4 | 1-2 days per week | 718 | 
                                                                 
                                    
                                    19.9%
                                 
                                                             | 
                                                        
                    
| 5 | 1-3 days per month | 1005 | 
                                                                 
                                    
                                    27.9%
                                 
                                                             | 
                                                        
                    
| 6 | Less than once a month | 1269 | 
                                                                 
                                    
                                    35.2%
                                 
                                                             | 
                                                        
                    
| 88 | 45 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    |
| Sysmiss | 1200 |