| Value | Category | 
                                    
                    
                        | 1 | central | 
                                    
                    
                        | 2 | copperbelt | 
                                    
                    
                        | 3 | eastern | 
                                    
                    
                        | 4 | luapula | 
                                    
                    
                        | 5 | lusaka | 
                                    
                    
                        | 6 | northern | 
                                    
                    
                        | 7 | northwestern | 
                                    
                    
                        | 8 | sothern | 
                                    
                    
                        | 9 | western | 
                            
            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.