| Value | Category | 
                                    
                    
                        | 1 | Cement, brick, stone or wood | 
                                    
                    
                        | 2 | Mud brick | 
                                    
                    
                        | 3 | Thatch and other | 
                                    
                    
                        | 4 | Plastic sheet | 
                                    
                    
                        | 5 | Metal sheet | 
                                    
                    
                        | 6 | Other | 
                                    
                    
                        | 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.