| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 8 | 
                                    
                                    0.9%
                                 | 
| 2 | NO | 340 | 
                                    
                                    39.3%
                                 | 
| Sysmiss | 517 | 
                                    
                                    59.8%
                                 |