| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 8 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    
| 2 | NO | 836 | 
                                                                 
                                    
                                    49.5%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 844 | 
                                                                 
                                    
                                    50%
                                 
                                                             |