| Value | Category | 
                                    
                    
                        | 0 | NA | 
                                    
                    
                        | 1 | Agriculture,forestry | 
                                    
                    
                        | 2 | Engineering,architecture,technology | 
                                    
                    
                        | 3 | Medicine,Public health,pharmacy,dentistry,compounding,nursing,mid-wifery | 
                                    
                    
                        | 4 | Veterinary services | 
                                    
                    
                        | 5 | Teachers training,physical education | 
                                    
                    
                        | 6 | Law,business management,accountancy,computer science | 
                                    
                    
                        | 7 | Journalism,library science,etc | 
                                    
                    
                        | 8 | Music,dancing,acting,fine arts etc | 
                                    
                    
                        | 9 | Craft and trade | 
                                    
                    
                        | X |  | 
                            
            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.