| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 1992 | 
                                                                 
                                    
                                    45.4%
                                 
                                                             | 
                                                        
                    
| 1 | yes | 299 | 
                                                                 
                                    
                                    6.8%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 2101 | 
                                                                 
                                    
                                    47.8%
                                 
                                                             |