| Value | Category | 
                                    
                    
                        | -9 | Don't know | 
                                    
                    
                        | -8 | Refused | 
                                    
                    
                        | -5 | Not applicable | 
                                    
                    
                        | -3 | Missing | 
                                    
                    
                        | 1 | One (Poorest) | 
                                    
                    
                        | 2 | Two | 
                                    
                    
                        | 3 | Three | 
                                    
                    
                        | 4 | Four | 
                                    
                    
                        | 5 | Five | 
                                    
                    
                        | 6 | Six (Richest) | 
                                    
                    
                        | 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.