| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 71 | 
                                    
                                    5.2%
                                 | 
| 2 | NO | 484 | 
                                    
                                    35.5%
                                 | 
| Sysmiss | 809 | 
                                    
                                    59.3%
                                 |