| Value | Category | 
                                    
                    
                        | 0 | 0. No problems | 
                                    
                    
                        | 1 | 1. Should be listed here but was not | 
                                    
                    
                        | 2 | 2. Present in ch mod, not in hh mod | 
                            
            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.