| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 1 | 
                                    
                                    0%
                                 | 
| 0 | No | 19282 | 
                                    
                                    75.9%
                                 | 
| 1 | Yes | 5638 | 
                                    
                                    22.2%
                                 | 
| 9 | Can't determine | 476 | 
                                    
                                    1.9%
                                 |