| Value | Category | Cases | |
|---|---|---|---|
| 0 | 627 | 
                                    
                                    77.3%
                                 | |
| 1 | 177 | 
                                    
                                    21.8%
                                 | |
| Missing value | 7 | 
                                    
                                    0.9%
                                 |