| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 1 | Male | 600 | 
                                    
                                    50%
                                 | 
| 2 | Female | 600 | 
                                    
                                    50%
                                 |