| Value | 
                    Category | 
                                                                            
                                    
                    
                        | 1 | 
                        1. yes  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 2 | 
                        2. no  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 997 | 
                        997. Can't Remember  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 998 | 
                        998. Refuses to say  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 999 | 
                        999. 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.