| Value | Category | Cases | |
|---|---|---|---|
| 0 | involuntary | 131 | 
                                                                 
                                    
                                    23.9%
                                 
                                                             | 
                                                        
                    
| 1 | voluntary | 416 | 
                                                                 
                                    
                                    76.1%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 15883 |