| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | No | 208 | 
                                    
                                    17.3%
                                 | 
| 1 | Yes | 688 | 
                                    
                                    57.3%
                                 | 
| 9 | Can't determine | 304 | 
                                    
                                    25.3%
                                 |