| Value | 
                    Category | 
                                                                            
                                    
                    
                        | 10 | 
                        correct  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 11 | 
                        correct2  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 70 | 
                        incorrect  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 71 | 
                        incorrect3  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 90 | 
                        crossed out,...  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 98 | 
                        not admin.  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 99 | 
                        missing  | 
                        
                            
                        
                        
                        
                        
                            
                    
                                    
                    
                        | 101 | 
                        .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.