| Value | Category | 
                                    
                    
                        | 1 | I have never smoked hookah/narguileh | 
                                    
                    
                        | 2 | I don't smoke hookah/narguileh now | 
                                    
                    
                        | 3 | Yes | 
                                    
                    
                        | 4 | No | 
                                    
                    
                        | Sysmiss |  | 
                            
            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.