| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 515 | 
                                    
                                    37.8%
                                 | 
| 2 | NO | 16 | 
                                    
                                    1.2%
                                 | 
| Sysmiss | 833 | 
                                    
                                    61.1%
                                 |