| Value | Category | Cases | |
|---|---|---|---|
| 1 | SI | 8 | 
                                    
                                    2.2%
                                 | 
| 2 | NO | 48 | 
                                    
                                    13.5%
                                 | 
| Sysmiss | 300 | 
                                    
                                    84.3%
                                 |