| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 0 | 
                                    
                                    0%
                                 | 
| 0 | No | 18564 | 
                                    
                                    73.1%
                                 | 
| 1 | Yes | 6051 | 
                                    
                                    23.8%
                                 | 
| 9 | Can't determine | 782 | 
                                    
                                    3.1%
                                 |