| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 63 | 
                                    
                                    22.2%
                                 | 
| 2 | Once a year | 84 | 
                                    
                                    29.6%
                                 | 
| 3 | Once a month | 91 | 
                                    
                                    32%
                                 | 
| 4 | Once a week | 29 | 
                                    
                                    10.2%
                                 | 
| 5 | Almost every day | 17 | 
                                    
                                    6%
                                 | 
| Sysmiss | 92 |