| Value | Category | 
                                    
                    
                        | 0 | no music observed | 
                                    
                    
                        | 1 | Singing only | 
                                    
                    
                        | 2 | Clap/dance only | 
                                    
                    
                        | 3 | Both and/or other actions | 
                            
            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.