| Value | Category | 
                                    
                    
                        | 1 | NO SCHOOL | 
                                    
                    
                        | 2 | SOME PRIMARY | 
                                    
                    
                        | 3 | COMPLETED PRIMARY | 
                                    
                    
                        | 4 | SOME SECONDARY | 
                                    
                    
                        | 5 | COMPLETED SECONDARY | 
                                    
                    
                        | 6 | MORE THAN SECONDARY | 
                                    
                    
                        | 7 | DON'T KNOW | 
                            
            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.