| Value | Category | 
                                    
                    
                        | -4 | missing data | 
                                    
                    
                        | -3 | refused to answer | 
                                    
                    
                        | -2 | not applicable | 
                                    
                    
                        | -1 | do not know | 
                                    
                    
                        | 1 | government old age pension | 
                                    
                    
                        | 2 | other old age pension | 
                                    
                    
                        | 3 | child maintenance payments | 
                                    
                    
                        | 4 | government child support grant | 
                                    
                    
                        | 5 | government foster care grant | 
                                    
                    
                        | 6 | government disability grant | 
                                    
                    
                        | 7 | workmen's compensation fund / uif | 
                                    
                    
                        | 8 | other government grant | 
                                    
                    
                        | 9 | none | 
                                    
                    
                        | 10 | family trust | 
                                    
                    
                        | 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.