| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 320 | 
                                                                 
                                    
                                    36.2%
                                 
                                                             | 
                                                        
                    
| 1 | yes | 545 | 
                                                                 
                                    
                                    61.7%
                                 
                                                             | 
                                                        
                    
| 8 | dk | 19 | 
                                                                 
                                    
                                    2.1%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 5871 |