| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 7 | 
                                                                 
                                    
                                    3.4%
                                 
                                                             | 
                                                        
                    
| 1 | yes | 192 | 
                                                                 
                                    
                                    92.8%
                                 
                                                             | 
                                                        
                    
| 8 | dk | 8 | 
                                                                 
                                    
                                    3.9%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 5 |