| Value | Category | 
                                    
                    
                        | 1 | Wait was too long | 
                                    
                    
                        | 2 | Medical specialist was absent | 
                                    
                    
                        | 3 | It was too expensive | 
                                    
                    
                        | 4 | Other reasons | 
                                    
                    
                        | 0 | Not in Universe | 
                            
            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.