| Value | Category | 
                                    
                    
                        | 1 | 10 times or more | 
                                    
                    
                        | 2 | 5 times to less than 10 times | 
                                    
                    
                        | 3 | 2 times to less than 5 times | 
                                    
                    
                        | 4 | 1 to less than 2 times | 
                                    
                    
                        | 5 | other | 
                                    
                    
                        | 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.