| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 103 | 
                                    
                                    10.3%
                                 | 
| 2 | NO | 252 | 
                                    
                                    25.1%
                                 | 
| Sysmiss | 649 | 
                                    
                                    64.6%
                                 |