| Value | Category | 
                                    
                    
                        | 10 | Household chores/domestic | 
                                    
                    
                        | 20 | Agricultural | 
                                    
                    
                        | 21 | Cultivating or harvesting | 
                                    
                    
                        | 22 | Plantation work | 
                                    
                    
                        | 23 | Rearing livestock | 
                                    
                    
                        | 30 | Fisheries, mining, forestry | 
                                    
                    
                        | 31 | Fishery work | 
                                    
                    
                        | 32 | Mining | 
                                    
                    
                        | 40 | Sales and service work | 
                                    
                    
                        | 41 | Selling goods on market, street, or shop | 
                                    
                    
                        | 42 | Selling alcohol, drugs, cigarettes | 
                                    
                    
                        | 43 | Prostitution | 
                                    
                    
                        | 50 | Skilled manual | 
                                    
                    
                        | 51 | Manufacturing | 
                                    
                    
                        | 52 | Construction | 
                                    
                    
                        | 53 | Mechanic | 
                                    
                    
                        | 54 | Production of toxic products | 
                                    
                    
                        | 60 | Unskilled manual | 
                                    
                    
                        | 61 | Heavy transport | 
                                    
                    
                        | 80 | Other | 
                                    
                    
                        | 97 | Don't know | 
                                    
                    
                        | 98 | Missing | 
                                    
                    
                        | 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.