| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | No | 920 | 
                                    
                                    76.7%
                                 | 
| 1 | Yes | 224 | 
                                    
                                    18.7%
                                 | 
| 9 | Can't determine | 56 | 
                                    
                                    4.7%
                                 |