| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 18 | 
                                    
                                    4%
                                 | 
| 2 | NO | 94 | 
                                    
                                    21.1%
                                 | 
| Sysmiss | 333 | 
                                    
                                    74.8%
                                 |