| Value | Category | Cases | |
|---|---|---|---|
| 0 | 537 | 
                                    
                                    14.8%
                                 | |
| 1 | 28 | 
                                    
                                    0.8%
                                 | |
| Missing value | 3060 | 
                                    
                                    84.4%
                                 |