| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 79 | 
                                    
                                    7.7%
                                 | 
| 2 | NO | 443 | 
                                    
                                    42.9%
                                 | 
| Sysmiss | 510 | 
                                    
                                    49.4%
                                 |