| Value | Category | 
                                    
                    
                        |  | No | 
                                    
                    
                        | 1 | Yes | 
                                    
                    
                        | 2147483622 | Don’t know | 
                                    
                    
                        | 2147483623 | Refused to respond | 
                                    
                    
                        | 2147483647 | Not administered | 
                                    
                    
                        | 11 | .Z | 
                            
            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.