| Value | Category | Cases | |
|---|---|---|---|
| 0 | 82 | 
                                    
                                    6.4%
                                 | |
| 1 | 31 | 
                                    
                                    2.4%
                                 | |
| Missing value | 1173 | 
                                    
                                    91.2%
                                 |