| Value | Category | 
                                    
                    
                        | 0 | No (0) | 
                                    
                    
                        | 1 | Yes (1) | 
                                    
                    
                        | 2147483622 | N/A or Skipped (.a) | 
                                    
                    
                        | 2147483623 | Do Not Know/Refuse (.b) | 
                                    
                    
                        | Sysmiss |  | 
                            
            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.