| Value | Category | 
                                    
                    
                        | 0 | N'existe pas | 
                                    
                    
                        | 1 | Sur place | 
                                    
                    
                        | 2 | Inferieur à 1/2 heures | 
                                    
                    
                        | 3 | [1/2h-1h[ | 
                                    
                    
                        | 4 | [1h-2h[ | 
                                    
                    
                        | 5 | [2h-5h[ | 
                                    
                    
                        | 6 | Plus de 1/2 journée | 
                                    
                    
                        | 9 | Manquant | 
                            
            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.