| Value | Category | 
                                    
                    
                        | 1 | mud | 
                                    
                    
                        | 2 | wooden | 
                                    
                    
                        | 3 | brick or stone | 
                                    
                    
                        | 4 | tiles or cement | 
                                    
                    
                        | 5 | ceramic/marble | 
                                    
                    
                        | 6 | parquet | 
                                    
                    
                        | 7 | 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.