| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 115 | 
                                    
                                    13.3%
                                 | 
| 2 | NO | 116 | 
                                    
                                    13.4%
                                 | 
| Sysmiss | 634 | 
                                    
                                    73.3%
                                 |