| Value | 
                    Category | 
                                    
                                                        
                        | 0 | 
                        Not given | 
                                            
                                                        
                        | 44 | 
                        Marked on card | 
                                            
                                                        
                        | 66 | 
                        Mother reported | 
                                            
                                                        
                        | 97 | 
                        Inconsistent | 
                                            
                                                        
                        | 98 | 
                        DK | 
                                            
                                                        
                        | 99 | 
                        Missing | 
                                            
                            
            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.