| Value | Category | 
                                    
                    
                        | 1 | 1. very low | 
                                    
                    
                        | 2 | 2. low | 
                                    
                    
                        | 3 | 3. about 50/50 | 
                                    
                    
                        | 4 | 4. high | 
                                    
                    
                        | 5 | 5. very high | 
                                    
                    
                        | 9 | 9. 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.