| Value | Category | 
                                    
                    
                        | 994 | In menopause | 
                                    
                    
                        | 995 | Before last pregnancy | 
                                    
                    
                        | 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.