| Value | Category | 
                                    
                    
                        | 0 | None | 
                                    
                    
                        | 2 | 1-5 days | 
                                    
                    
                        | 3 | 6-10 days | 
                                    
                    
                        | 4 | 11-15 days | 
                                    
                    
                        | 5 | More than 15 days | 
                                    
                    
                        | 99 | N/R | 
                                    
                    
                        | 888 | Don't know | 
                                    
                    
                        | 999 | N/A | 
                            
            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.