| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 10 | 
                                                                 
                                    
                                    8.9%
                                 
                                                             | 
                                                        
                    
| 2 | Every few weeks | 26 | 
                                                                 
                                    
                                    23.2%
                                 
                                                             | 
                                                        
                    
| 3 | Every few months | 47 | 
                                                                 
                                    
                                    42%
                                 
                                                             | 
                                                        
                    
| 4 | Not at all | 29 | 
                                                                 
                                    
                                    25.9%
                                 
                                                             |