| Value | Category | Cases | |
|---|---|---|---|
| 1 | daily | 1 | 
                                    
                                    16.7%
                                 | 
| 2 | weekly | 1 | 
                                    
                                    16.7%
                                 | 
| 3 | twice a month | 0 | 
                                    
                                    0%
                                 | 
| 4 | monthly | 3 | 
                                    
                                    50%
                                 | 
| 5 | from time to time | 1 | 
                                    
                                    16.7%
                                 | 
| 6 | other | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 1 |