| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 456 | 
                                    
                                    44.2%
                                 | 
| 2 | NO | 34 | 
                                    
                                    3.3%
                                 | 
| Sysmiss | 542 | 
                                    
                                    52.5%
                                 |