| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 1218 | 
                                    
                                    14.8%
                                 | 
| 2 | NO | 1009 | 
                                    
                                    12.3%
                                 | 
| Sysmiss | 5990 | 
                                    
                                    72.9%
                                 |