| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 950 | 
                                                                 
                                    
                                    80.4%
                                 
                                                             | 
                                                        
                    
| 1 | yes | 231 | 
                                                                 
                                    
                                    19.6%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 1019 |