| Value | Category | 
                                    
                    
                        | -7 |  | 
                                    
                    
                        | 1 | yes, baseline & midline | 
                                    
                    
                        | 2 | yes, baseline only | 
                                    
                    
                        | 3 | yes, midline only | 
                                    
                    
                        | 4 | no | 
                                    
                    
                        | 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.