| Value | Category | Cases | |
|---|---|---|---|
| 0 | 427 | 
                                    
                                    5.2%
                                 | |
| 1 | 1132 | 
                                    
                                    13.7%
                                 | |
| Missing value | 6686 | 
                                    
                                    81.1%
                                 |