| Value | Category | 
                                    
                    
                        | 1 | On foot | 
                                    
                    
                        | 2 | Taxi | 
                                    
                    
                        | 3 | Bus(public) | 
                                    
                    
                        | 4 | Train | 
                                    
                    
                        | 5 | Own transport | 
                                    
                    
                        | 6 | Other, specify | 
                                    
                    
                        | 9 | Unspecified | 
                            
            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.