| Value | 
                    Category | 
                                                                            
                                    
                    
                        | 00 | 
                        No flag  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 01 | 
                        Number GT interval since birth  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 02 | 
                        Number plus amenorrhea GT interval  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 03 | 
                        Number reported, but period not returned  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 04 | 
                        Reported before last birth, but no birth  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 05 | 
                        Reported before last birth, but period since  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 06 | 
                        Reported never menstruated, but period returned  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 07 | 
                        Reported time during pregnancy  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 08 | 
                        Reported never menstruated but had kids  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 09 | 
                        Reported period before last birth  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 99 | 
                        NIU (not in universe)  | 
                        
                            
                        
                        
                        
                        
                            
                    
                            
            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.