| Value | Category | 
                                    
                    
                        | 0 |  | 
                                    
                    
                        | 1 | informant busy | 
                                    
                    
                        | 2 | members away from home | 
                                    
                    
                        | 3 | informant non-cooperative | 
                                    
                    
                        | 4 |  | 
                                    
                    
                        | 6 |  | 
                                    
                    
                        | 7 |  | 
                                    
                    
                        | 9 | others | 
                            
            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.