| Value | Category | 
                                    
                    
                        | 1 | 1. Poor | 
                                    
                    
                        | 2 | 2. Fair | 
                                    
                    
                        | 3 | 3. Good | 
                                    
                    
                        | 4 | 4. Very Good | 
                                    
                    
                        | 5 | 5. Excellent | 
                                    
                    
                        | 9 | 9. Don't know | 
                                    
                    
                        | 98 | 98. Refused | 
                                    
                    
                        | 99 | 99. Don't know | 
                            
            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.