| Value | Category | 
                                    
                    
                        | 0 | Knows no method | 
                                    
                    
                        | 1 | Knows only folkloric method | 
                                    
                    
                        | 2 | Knows only traditional method | 
                                    
                    
                        | 3 | Knows modern method | 
                            
            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.