| Value | Category | 
                                    
                    
                        | 1 | definitely | 
                                    
                    
                        | 2 | probably | 
                                    
                    
                        | 3 | probably not | 
                                    
                    
                        | 4 | definitely not | 
                                    
                    
                        | 5 | uncertain / do not 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.