| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 228 | 
                                                                 
                                    
                                    98.3%
                                 
                                                             | 
                                                        
                    
| 1 | Yes | 4 | 
                                                                 
                                    
                                    1.7%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 2579 |