| Value | Category | 
                                    
                    
                        | 1 | Yes, stopped completely | 
                                    
                    
                        | 2 | Not stopped but reduced | 
                                    
                    
                        | 3 | Not stopped at all | 
                                    
                    
                        | 4 | Did not receive treatment | 
                            
            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.