| Value | Category | 
                                    
                    
                        | -999 | -999 | 
                                    
                    
                        | -888 | -888 | 
                                    
                    
                        | 1 | Esan | 
                                    
                    
                        | 2 | Fulani | 
                                    
                    
                        | 3 | Gbagyi | 
                                    
                    
                        | 4 | Hausa | 
                                    
                    
                        | 5 | Ibibio | 
                                    
                    
                        | 6 | Idoma | 
                                    
                    
                        | 7 | Igbira | 
                                    
                    
                        | 8 | Igbo | 
                                    
                    
                        | 9 | Ijaw | 
                                    
                    
                        | 10 | Isoko | 
                                    
                    
                        | 11 | Kanuri | 
                                    
                    
                        | 12 | Tiv | 
                                    
                    
                        | 13 | Yoruba | 
                                    
                    
                        | 14 | 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.