| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 17540 | 
                                                                 
                                    
                                    93.5%
                                 
                                                             | 
                                                        
                    
| 1 | yes - listening | 598 | 
                                                                 
                                    
                                    3.2%
                                 
                                                             | 
                                                        
                    
| 2 | yes - not listening | 613 | 
                                                                 
                                    
                                    3.3%
                                 
                                                             | 
                                                        
                    
| 9 | 3 | 
                                                                 
                                    
                                    0%
                                 
                                                             |