| Value | Category | 
                                    
                    
                        | 1 | Transportation costs | 
                                    
                    
                        | 2 | Drugs related to the pregnancy | 
                                    
                    
                        | 3 | Food and clothes to the baby | 
                                    
                    
                        | 4 | Other | 
                                    
                    
                        | 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.