| Value | Category | 
                                    
                    
                        | 1 | Straw | 
                                    
                    
                        | 2 | Mud | 
                                    
                    
                        | 3 | Wood | 
                                    
                    
                        | 4 | Steel (galvanized) | 
                                    
                    
                        | 5 | Reinforced concrete | 
                                    
                    
                        | 6 | Tiles/wooden planks | 
                                    
                    
                        | 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.