| Value | Category | 
                                    
                    
                        | 1 | Yes, public sewers | 
                                    
                    
                        | 2 | Yes, septic tank | 
                                    
                    
                        | 3 | No, letrine only | 
                                    
                    
                        | 4 | No, nothing | 
                                    
                    
                        | 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.