| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 81 | 
                                                                 
                                    
                                    6.5%
                                 
                                                             | 
                                                        
                    
| 1 | Sometimes | 479 | 
                                                                 
                                    
                                    38.6%
                                 
                                                             | 
                                                        
                    
| 2 | Often | 666 | 
                                                                 
                                    
                                    53.7%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 11 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| d | DK | 3 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             |