| Value | Category | 
                                    
                    
                        | 1 | Usually active, employed | 
                                    
                    
                        | 2 | Usually active, unemployed | 
                                    
                    
                        | 3 | Usually not active | 
                                    
                    
                        | 9 | Not stated | 
                            
            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.