| Value | 
                    Category | 
                                                                            
                                    
                    
                        | 101 | 
                        1 day  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 201 | 
                        1 week  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 301 | 
                        1 month  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 401 | 
                        1 year  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 994 | 
                        In menopause  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 995 | 
                        Before last birth  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 996 | 
                        Never menstruated  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 997 | 
                        Inconsistent  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 998 | 
                        Don't know  | 
                        
                            
                        
                        
                        
                        
                            
                    
                            
            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.