| Value | Category | 
                                    
                    
                        | 1 |  | 
                                    
                    
                        | 1 2 |  | 
                                    
                    
                        | 1 2 3 4 |  | 
                                    
                    
                        | 1 2 3 4 7 |  | 
                                    
                    
                        | 1 2 4 |  | 
                                    
                    
                        | 1 2 4 7 |  | 
                                    
                    
                        | 1 3 |  | 
                                    
                    
                        | 1 3 4 |  | 
                                    
                    
                        | 1 3 4 7 |  | 
                                    
                    
                        | 1 3 7 |  | 
                                    
                    
                        | 1 4 |  | 
                                    
                    
                        | 1 7 |  | 
                                    
                    
                        | 2 |  | 
                                    
                    
                        | 2 3 |  | 
                                    
                    
                        | 2 3 4 |  | 
                                    
                    
                        | 2 3 4 7 |  | 
                                    
                    
                        | 2 3 7 |  | 
                                    
                    
                        | 2 4 |  | 
                                    
                    
                        | 2 7 |  | 
                                    
                    
                        | 3 |  | 
                                    
                    
                        | 3 4 |  | 
                                    
                    
                        | 3 4 7 |  | 
                                    
                    
                        | 3 7 |  | 
                                    
                    
                        | 4 |  | 
                                    
                    
                        | 4 7 |  | 
                                    
                    
                        | 7 |  | 
                            
            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.