| Value | Category | 
                                    
                    
                        | 1 | sur eau | 
                                    
                    
                        | 2 | bouillir | 
                                    
                    
                        | 3 | filtrer | 
                                    
                    
                        | 4 | eau de javel | 
                                    
                    
                        | 5 | permanganate | 
                                    
                    
                        | 6 | bouteille exposee au soleil | 
                                    
                    
                        | 7 | autres | 
                                    
                    
                        | 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.