| Value | Category | 
                                    
                    
                        | 1 | No formal schooling | 
                                    
                    
                        | 2 | Informal schooling only (including Koranic schooling) | 
                                    
                    
                        | 3 | Some primary schooling | 
                                    
                    
                        | 4 | Primary school completed | 
                                    
                    
                        | 5 | Intermediate school, some secondary school/high school | 
                                    
                    
                        | 6 | Secondary school/high school completed | 
                                    
                    
                        | 7 | Post-secondary qualification, other ta?\han university | 
                                    
                    
                        | 8 | Some university | 
                                    
                    
                        | 9 | University completed | 
                                    
                    
                        | 10 | Post-graduate | 
                                    
                    
                        | 11 | Dont know | 
                                    
                    
                        | 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.