| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 812 | 
                                                                 
                                    
                                    99.9%
                                 
                                                             | 
                                                        
                    
| 1 | yes | 1 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 3975 |