| Value | Category | Cases | |
|---|---|---|---|
| 1 | At least every week | 197 | 
                                    
                                    73.8%
                                 | 
| 2 | Approximately every two weeks | 28 | 
                                    
                                    10.5%
                                 | 
| 3 | Once a month | 20 | 
                                    
                                    7.5%
                                 | 
| 4 | Less than once a month | 11 | 
                                    
                                    4.1%
                                 | 
| 5 | Never | 11 | 
                                    
                                    4.1%
                                 | 
| Sysmiss | 109 |