| Value | Category | 
                                    
                    
                        | 1 | Pas grave | 
                                    
                    
                        | 2 | Problème financier | 
                                    
                    
                        | 3 | Distance trop longue | 
                                    
                    
                        | 4 | Inutile or ne veut pas | 
                                    
                    
                        | 5 | 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.