| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 521 | 
                                    
                                    49.1%
                                 | 
| 2 | NO | 97 | 
                                    
                                    9.1%
                                 | 
| Sysmiss | 443 | 
                                    
                                    41.8%
                                 |