| Value | Category | 
                                    
                    
                        | 0 | ninguna | 
                                    
                    
                        | 1 | primaria incompleta | 
                                    
                    
                        | 2 | primaria completa | 
                                    
                    
                        | 3 | secundaria incompleta | 
                                    
                    
                        | 4 | secundaria completa | 
                                    
                    
                        | 5 | superior | 
                                    
                    
                        | 6 | alfabetización | 
                                    
                    
                        | 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.