| Value | Category | 
                                    
                    
                        | 1 | HH not in phone survey | 
                                    
                    
                        | 2 | New indiv during phone survey | 
                                    
                    
                        | 3 | Matched HH-Ph surveys | 
                            
            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.