| Value | Category | 
                                    
                    
                        | 0 | first year primary incomplete | 
                                    
                    
                        | 1 | primary 1 | 
                                    
                    
                        | 2 | primary 2 | 
                                    
                    
                        | 3 | primary 3 | 
                                    
                    
                        | 4 | primary 4 | 
                                    
                    
                        | 5 | primary 5 | 
                                    
                    
                        | 6 | primary 6 | 
                                    
                    
                        | 7 | vocational 1 | 
                                    
                    
                        | 8 | vocational 2 | 
                                    
                    
                        | 9 | vocational 3 | 
                                    
                    
                        | 10 | vocational 4 | 
                                    
                    
                        | 11 | vocational 5 | 
                                    
                    
                        | 12 | vocational 6/7 | 
                                    
                    
                        | 13 | secondary 1 | 
                                    
                    
                        | 14 | secondary 2 | 
                                    
                    
                        | 15 | secondary 3 | 
                                    
                    
                        | 16 | secondary 4 | 
                                    
                    
                        | 17 | secondary 5 | 
                                    
                    
                        | 18 | secondary 6 | 
                                    
                    
                        | 19 | university 1 | 
                                    
                    
                        | 20 | university 2 | 
                                    
                    
                        | 21 | university 3 | 
                                    
                    
                        | 22 | university 4 | 
                                    
                    
                        | 23 | university 5 | 
                                    
                    
                        | 24 | university 6 | 
                                    
                    
                        | 25 | university 7 | 
                                    
                    
                        | 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.