| Value | 
                    Category | 
                                                                            
                                    
                    
                        | 00 | 
                        Has neither health card or other document  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 01 | 
                        Has health card only, seen  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 02 | 
                        Has health card only, was not seen  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 03 | 
                        Has other document only, seen  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 04 | 
                        Has other document only, was not seen  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 05 | 
                        Has health card and other document, only card seen  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 06 | 
                        Has health card and other document, only other doc seen  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 07 | 
                        Has health card and other document, both seen  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 08 | 
                        Has health card and other document, neither seen  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 99 | 
                        NIU (not in universe)  | 
                        
                            
                        
                        
                        
                        
                            
                    
                            
            Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.