| Value | Category | 
                                    
                    
                        | 1 | < 11.5cm | 
                                    
                    
                        | 2 | >=11.5, < 12.5cm | 
                                    
                    
                        | 3 | >=12.5, < 13.5cm | 
                                    
                    
                        | 4 | >=13.5, < 14.5cm | 
                                    
                    
                        | 5 | >=14.5cm | 
                                    
                    
                        | 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.