| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 10 | 
                                    
                                    8.3%
                                 | 
| 2 | Every few weeks | 27 | 
                                    
                                    22.3%
                                 | 
| 3 | Every few months | 57 | 
                                    
                                    47.1%
                                 | 
| 4 | Not at all | 27 | 
                                    
                                    22.3%
                                 | 
| Sysmiss | 27 |