| Value | Category | 
                                    
                    
                        | 0 | ninguna | 
                                    
                    
                        | 1 | prim.incompleta | 
                                    
                    
                        | 2 | prim. completa | 
                                    
                    
                        | 3 | sec. incompleta | 
                                    
                    
                        | 4 | secundaria completa | 
                                    
                    
                        | 5 | superior/postgrado | 
                            
            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.