| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 83 | 
                            
                             
                                
                                2%
                                                             
                            
                         | 
                        
                    
| 2 | no | 51 | 
                            
                             
                                
                                1.2%
                                                             
                            
                         | 
                        
                    
| 9 | not applicable | 3903 | 
                            
                             
                                
                                92.7%
                                                             
                            
                         | 
                        
                    
| 9999995 | missing:impute | 173 | 
                            
                             
                                
                                4.1%
                                                             
                            
                         | 
                        
                    
| Sysmiss | 23 |