| Value | Category | Cases | |
|---|---|---|---|
| 1 | No | 4 | 
                                    
                                    0.2%
                                 | 
| 2 | Yes | 31 | 
                                    
                                    1.6%
                                 | 
| Missing value | 1926 | 
                                    
                                    98.2%
                                 |