| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 5 | 
                                                                 
                                    
                                    11.6%
                                 
                                                             | 
                                                        
                    
| 1 | yes | 36 | 
                                                                 
                                    
                                    83.7%
                                 
                                                             | 
                                                        
                    
| 8 | don't know | 2 | 
                                                                 
                                    
                                    4.7%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 6712 |