| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 104 | 
                                    
                                    7.6%
                                 | 
| 2 | NO | 451 | 
                                    
                                    33.1%
                                 | 
| Sysmiss | 809 | 
                                    
                                    59.3%
                                 |