| Value | Category | 
                                    
                    
                        | 0 |  | 
                                    
                    
                        | 1 | Sin instrucción | 
                                    
                    
                        | 2 | Primaria | 
                                    
                    
                        | 3 | Secundaria | 
                                    
                    
                        | 4 | Preparatoria | 
                                    
                    
                        | 5 | Licenciatura | 
                                    
                    
                        | 6 | Posgrado | 
                            
            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.