| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 963 | 
                                                                 
                                    
                                    78%
                                 
                                                             | 
                                                        
                    
| 1 | Yes | 271 | 
                                                                 
                                    
                                    22%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 9 |