| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 18359 | 
                                                                 
                                    
                                    97.9%
                                 
                                                             | 
                                                        
                    
| 1 | yes - listening | 12 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| 2 | yes - not listening | 380 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    
| 9 | 3 | 
                                                                 
                                    
                                    0%
                                 
                                                             |