| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 10 | 
                                                                 
                                    
                                    66.7%
                                 
                                                             | 
                                                        
                    
| 2 | Twice a week | 2 | 
                                                                 
                                    
                                    13.3%
                                 
                                                             | 
                                                        
                    
| 3 | Once a week | 1 | 
                                                                 
                                    
                                    6.7%
                                 
                                                             | 
                                                        
                    
| 6 | Others | 2 | 
                                                                 
                                    
                                    13.3%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 10901 |