| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 529 | 
                                    
                                    51.3%
                                 | 
| 3 | NO | 13 | 
                                    
                                    1.3%
                                 | 
| Sysmiss | 490 | 
                                    
                                    47.5%
                                 |