| Value | Category | 
                                    
                    
                        | 1 | Propane gas | 
                                    
                    
                        | 2 | Gasoline | 
                                    
                    
                        | 3 | White gasoline | 
                                    
                    
                        | 4 | Electricity | 
                                    
                    
                        | 5 | Wood | 
                                    
                    
                        | 6 | Coal | 
                                    
                    
                        | 7 | Petrol, kerose, ACPM | 
                                    
                    
                        | 8 | Do not cook | 
                                    
                    
                        | 96 | Other | 
                            
            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.