| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 424 | 
                                                                 
                                    
                                    88.3%
                                 
                                                             | 
                                                        
                    
| 1 | yes | 56 | 
                                                                 
                                    
                                    11.7%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 1720 |