| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 452 | 
                                    
                                    13.7%
                                 | 
| 2 | Once/Twice a Week | 162 | 
                                    
                                    4.9%
                                 | 
| 3 | Once/Twice a Month | 904 | 
                                    
                                    27.3%
                                 | 
| 4 | Never | 1790 | 
                                    
                                    54.1%
                                 | 
| Sysmiss | 1 |