| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 0 | 
                            
                             
                                
                                0%
                                                             
                            
                         | 
                        
                    
| 1 | Yes | 4 | 
                            
                             
                                
                                0.5%
                                                             
                            
                         | 
                        
                    
| 3 | Not Sure | 0 | 
                            
                             
                                
                                0%
                                                             
                            
                         | 
                        
                    
| 5 | miss | 0 | 
                            
                             
                                
                                0%
                                                             
                            
                         | 
                        
                    
| 6 | Other | 0 | 
                            
                             
                                
                                0%
                                                             
                            
                         | 
                        
                    
| 7 | Refusal | 0 | 
                            
                             
                                
                                0%
                                                             
                            
                         | 
                        
                    
| 8 | dtk | 0 | 
                            
                             
                                
                                0%
                                                             
                            
                         | 
                        
                    
| 9 | na | 877 | 
                            
                             
                                
                                99.5%
                                                             
                            
                         | 
                        
                    
| Sysmiss | 1877 |