| Value | Category | 
                                    
                    
                        | 1 | Abstnce | 
                                    
                    
                        | 2 | Rhythm | 
                                    
                    
                        | 3 | Wthdrwl | 
                                    
                    
                        | 4 | Douche | 
                                    
                    
                        | 5 | Condom | 
                                    
                    
                        | 6 | Spermcd | 
                                    
                    
                        | 7 | Diaphrgm | 
                                    
                    
                        | 8 | Pill | 
                                    
                    
                        | 9 | IUD | 
                                    
                    
                        | 10 | Injctn | 
                                    
                    
                        | 11 | FmStrlzn | 
                                    
                    
                        | 12 | MlStrlzn | 
                                    
                    
                        | 13 | Other | 
                            
            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.