| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 93 | 
                                                                 
                                    
                                    6.6%
                                 
                                                             | 
                                                        
                    
| 1 | Sometimes | 580 | 
                                                                 
                                    
                                    41.4%
                                 
                                                             | 
                                                        
                    
| 2 | Often | 590 | 
                                                                 
                                    
                                    42.1%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 130 | 
                                                                 
                                    
                                    9.3%
                                 
                                                             | 
                                                        
                    |
| d | DK | 4 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| r | RF | 3 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             |