| Value | Category | 
                                    
                    
                        | 0 |  | 
                                    
                    
                        | 1 | Self/ household members | 
                                    
                    
                        | 2 | Other relatives | 
                                    
                    
                        | 3 | Friend/ other non-relatives | 
                                    
                    
                        | 4 | Government | 
                                    
                    
                        | 5 | Employer | 
                                    
                    
                        | 6 | No expenses | 
                                    
                    
                        | 77 |  | 
                                    
                    
                        | Sysmiss |  | 
                            
            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.