| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 5 | 
                                    
                                    0%
                                 | 
| 0 | No | 18932 | 
                                    
                                    74.5%
                                 | 
| 1 | Yes | 6396 | 
                                    
                                    25.2%
                                 | 
| 9 | Can't determine | 64 | 
                                    
                                    0.3%
                                 |