| Value | Category | 
                                    
                    
                        | 1 | IMPROVE MY WORK | 
                                    
                    
                        | 2 | I SUCCEED IN EXAM | 
                                    
                    
                        | 3 | GET EXTRA HELP | 
                                    
                    
                        | 4 | TO BE WITH FRIENDS | 
                                    
                    
                        | 5 | compulsary | 
                                    
                    
                        | 9 | omitted | 
                                    
                    
                        | 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.