| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 19 | 
                                    
                                    1.8%
                                 | 
| 2 | NO | 432 | 
                                    
                                    41.9%
                                 | 
| Sysmiss | 581 | 
                                    
                                    56.3%
                                 |