| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 6 | 
                                    
                                    0.6%
                                 | 
| 2 | NO | 445 | 
                                    
                                    43.1%
                                 | 
| Sysmiss | 581 | 
                                    
                                    56.3%
                                 |