| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 84 | 
                                    
                                    29%
                                 | 
| 2 | Less than once a year | 42 | 
                                    
                                    14.5%
                                 | 
| 3 | Once a year to a few times a year | 70 | 
                                    
                                    24.1%
                                 | 
| 4 | Less than once a month | 34 | 
                                    
                                    11.7%
                                 | 
| 5 | At least once a month | 41 | 
                                    
                                    14.1%
                                 | 
| 6 | At least once a week | 19 | 
                                    
                                    6.6%
                                 | 
| Sysmiss | 29 |