| Value | Category | 
                                    
                    
                        | 0 | Not applicable | 
                                    
                    
                        | 1 | No schooling | 
                                    
                    
                        | 2 | Some primary | 
                                    
                    
                        | 3 | Complete primary | 
                                    
                    
                        | 4 | Some secondary | 
                                    
                    
                        | 5 | Grade 12 / Std 10 | 
                                    
                    
                        | 6 | Higher | 
                            
            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.