| Value | Category | 
                                    
                    
                        | 1 | Not necessary | 
                                    
                    
                        | 2 | Not customary | 
                                    
                    
                        | 3 | Respondent didn't allow | 
                                    
                    
                        | 4 | Too costly | 
                                    
                    
                        | 5 | Too far/ no transport | 
                                    
                    
                        | 6 | Poor service | 
                                    
                    
                        | 7 | Lack of knowledge | 
                                    
                    
                        | 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.