| Value | Category | 
                                    
                    
                        | 1 | Brick, stone and concrete | 
                                    
                    
                        | 2 | Brick, stone and mud | 
                                    
                    
                        | 3 | Wood & tree branches | 
                                    
                    
                        | 4 | Reinforced concrete | 
                                    
                    
                        | 5 | Mud bricks | 
                                    
                    
                        | 6 | No walls | 
                                    
                    
                        | 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.