| Value | Category | 
                                    
                    
                        | -999 | -999 | 
                                    
                    
                        | -888 | -888 | 
                                    
                    
                        | 1 | Completed | 
                                    
                    
                        | 2 | Partially completed | 
                                    
                    
                        | 3 | Refusal | 
                                    
                    
                        | 4 | Respondent(s) not present | 
                                    
                    
                        | 5 | Other | 
                            
            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.