| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 548 | 
                                    
                                    40.2%
                                 | 
| 2 | NO | 285 | 
                                    
                                    20.9%
                                 | 
| Sysmiss | 531 | 
                                    
                                    38.9%
                                 |