| Value | Category | 
                                    
                    
                        | 0 | sans instruction | 
                                    
                    
                        | 1 | niveau primaire | 
                                    
                    
                        | 2 | niveau secondaire | 
                                    
                    
                        | 3 | niverau universitaire | 
                                    
                    
                        | 4 | autres formation professionnelle | 
                            
            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.