| Value | Category | 
                                    
                    
                        | 1 | Yes, radio only | 
                                    
                    
                        | 2 | Yes, internet only | 
                                    
                    
                        | 3 | Yes, radio and internet | 
                                    
                    
                        | 4 | None | 
                                    
                    
                        | 5 | 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.